0001437749-24-025210 | 10-Q | XBRL Viewer

Revenue from Contract with Customer [Text Block]

12.

REVENUE

Sale of Prototypes

The Company recorded revenue for prototype sales of $6 and $26 in the three and six months ended June 30, 2024, respectively, and $245 and $370 in the three and six months ended June 30, 2023, respectively. The Company does not incur significant contract costs in fulfilling or obtaining its contracts with customers.

Development Contracts

The Company has entered into research and development contracts as well as a sales, marketing and technical support services contract with companies primarily in the automotive industry. The Company assessed the number of performance obligations associated with the promises under each agreement, primarily the delivery of customized 4Sight^TM perception-related goods and services, and recognized $26 in revenue for performance obligations satisfied during both the three and six months ended June 30, 2024 and $326 and $837 during the three and six months ended June 30, 2023, respectively, in the condensed consolidated statements of operations and comprehensive loss.

Disaggregation of Revenue

The Company recognized the following revenues by geographic area based on the primary billing address of the customer and by the timing of the transfer of goods or services to customers (point in time or over time), as it believes such criteria best depict how the nature, amount, timing, and uncertainty of its revenue and cash flows are affected by economic factors. Total revenue based on the disaggregation criteria described above are as follows (in thousands):

	*Three months ended June 30,*				*Six months ended June 30,*
	*2024*		*2023*		*2024*		*2023*
Revenue by primary geographical market:
United States	$	26	$	443	$	41	$	990
Europe		6		128		11		160
Asia-Pacific		—		—		—		57
Total	$	32	$	571	$	52	$	1,207

Revenue by timing of recognition:
Recognized at a point in time	$	6	$	245	$	26	$	370
Recognized over time		26		326		26		837
Total	$	32	$	571	$	52	$	1,207

Contract Liabilities

The Company had $74 and $0 contract liabilities as of June 30, 2024 and December 31, 2023, respectively.

The following table shows the significant changes in contract liabilities balance for the six months ended June 30, 2024 and 2023 (in thousands):

	*Six months ended June 30,*
	*2024*		*2023*
Beginning balance	$	—	$	987
Revenue recognized that was included in the contract liabilities beginning balance		—		(837	)
Increase due to cash received and not recognized as revenue and billings in excess of revenue recognized during the period		74		—
Ending balance	$	74	$	150

Remaining Performance Obligations

Revenue allocated to remaining performance obligations represents the transaction price allocated to the performance obligations that are unsatisfied, or partially unsatisfied. It includes unearned revenue and amounts that will be invoiced and recognized as revenue in future periods and does not include contracts where the customer is not committed. The customer is not considered committed where they are able to terminate for convenience without payment of a substantive penalty under the contract. Additionally, as a practical expedient, the Company has not disclosed the value of unsatisfied performance obligations for contracts with an original expected length of one year or less. The contract liabilities balance represents the remaining performance obligations for contracts with an original duration of greater than one year.

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

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Note 5 - Prepaid and Other Current Assets (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Accumulated Loss on Advance to Suppliers	$ 1,385	$ 1,385

Note 2 - Fair Value Measurements

6 Months Ended

Jun. 30, 2024

Fair Value Disclosures [Text Block]

2.	FAIR VALUE MEASUREMENTS

The fair value of the Company’s financial assets and liabilities is determined in accordance with the fair value hierarchy established in FASB ASC Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). ASC 820 defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The fair value hierarchy of ASC 820 requires an entity to maximize the use of observable inputs when measuring fair value and classifies those inputs into three levels:

Level 1—Observable inputs, such as quoted prices in active markets for identical assets or liabilities.

Level 2—Observable inputs, other than Level 1 inputs, which are observable either directly or indirectly or can be corroborated by observable market data using quoted prices for similar assets or liabilities.

Level 3—Unobservable inputs in which there is little or no market data, which require the reporting entity to develop its own assumptions.

The Company's financial instruments that are not remeasured at fair value include accounts receivable, prepaid and other current assets, accounts payable, accrued expenses, other current liabilities, and convertible note. The carrying values of these financial instruments approximate their fair values.

The Company’s financial assets and liabilities measured at fair value on a recurring basis and the level of inputs used for such measurements were as follows (in thousands):

	*Fair Value Measured as of June 30, 2024 Using:*
	*Adjusted Cost*		*Unrealized Losses*			*Fair Value*		*Cash and Cash Equivalent*		*Marketable Securities*
Assets
Level 1
Money market funds	$	9,464	$	—		$	9,464	$	9,464	$	—
Level 2
Corporate bonds		10,062		(3	)		10,059		1,272		8,787
Commercial paper		6,135		(5	)		6,130		—		6,130
U.S. Government securities		1,857		—			1,857		—		1,857
Total financial assets	$	27,518	$	(8	)	$	27,510	$	10,736	$	16,774
Liabilities
Level 2
Private placement warrant liability	$	—	$	—		$	—	$	—	$	—
Level 3
Derivative warrant liability		—		—			39		—		—
Total financial liabilities	$	—	$	—		$	39	$	—	$	—

	*Fair Value Measured as of December 31, 2023 Using:*
	*Adjusted Cost*		*Unrealized Gains*		*Fair Value*		*Cash and Cash Equivalent*		*Marketable Securities*
Assets
Level 1
Money market funds	$	16,377	$	—	$	16,377	$	16,377	$	—
Level 2
Corporate bonds		2,880		1		2,881		—		2,881
Commercial paper		8,809		5		8,814		—		8,814
U.S. Government securities		7,892		4		7,896		—		7,896
Total financial assets	$	35,958	$	10	$	35,968	$	16,377	$	19,591
Liabilities
Level 2
Private placement warrant liability	$	—	$	—	$	—	$	—	$	—
Level 3
Derivative warrant liability		—		—		26		—		—
Total financial liabilities	$	—	$	—	$	26	$	—	$	—

The Company’s financial assets and liabilities subject to fair value procedures were comprised of the following:

Money Market Funds: The Company holds financial assets consisting of money market funds. These securities are valued using observable inputs, such as quoted prices in active markets for identical assets or liabilities.

Marketable Securities: The Company holds financial assets consisting of fixed-income U.S. government agency securities, corporate bonds, and commercial paper. The securities are valued using prices from independent pricing services based on quoted prices of identical instruments in less active or inactive markets. Additionally, quoted prices of similar instruments in active market or industry models using data inputs such as interest rates and prices that can be directly observed or corroborated in active markets are used to value marketable securities.

Derivative Warrant Liability: On September 15, 2022, the Company entered into a convertible note agreement with a face value of $10,500 (the "2022 Note"). The Company’s derivative warrant liability includes the warrants that were issued by the Company as part of the 2022 Note. The warrants are recorded on the condensed consolidated balance sheets at fair value. The fair value is based on unobservable inputs, which represent Level 3 measurements within the fair value hierarchy. The fair value estimate of the warrants was based on a Monte-Carlo simulation model. Inherent in a Monte-Carlo simulation model are assumptions related to price, volatility, risk-free interest rate, term to expiration, and dividend yield. The price is based on the publicly traded price of the Company’s common stock as of the measurement date. The Company estimated the volatility for the warrants based on the historical and implied volatilities of the Company's publicly traded common stock. The risk-free interest rate is based on interpolated U.S. Treasury rates, commensurate with a similar term to the warrants. The term to expiration was calculated as the contractual term of the warrants of four years. Finally, the Company does not currently anticipate paying a dividend. Any changes in these assumptions can change the valuation significantly. Changes in fair value are recognized in other income (expense) for each reporting period. Derivative Warrant Liability is included within other noncurrent liabilities on the condensed consolidated balance sheets.

Private Placement Warrant Liability: The Private Placement Warrants are recorded on the condensed consolidated balance sheets at fair value. The fair value is based on observable Level 2 inputs, specifically, the observable input of the Company's public warrants, as terms of both warrants are substantially similar. Any changes in the fair value of the liability are reflected in other income (expense), net, on the condensed consolidated statements of operations and comprehensive loss. Private Placement Warrant liability is included within other noncurrent liabilities on the condensed consolidated balance sheets.

For the six months ended June 30, 2024, there were no net transfers between Level 1 and Level 2 inputs.

The following table presents a summary of the changes in fair value of the Company’s Level 3 financial instruments for the six months ended June 30, 2024 (in thousands):

	*Derivative Warrant Liability*
Balance at December 31, 2023	$	26
Additions		—
Change in fair value included in other income (expense), net		13
Balance at June 30, 2024	$	39

The key inputs into the Monte-Carlo simulation model for the derivative warrant liability valued at June 30, 2024 are as follows:

	*June 30, 2024*
Expected term (years)		2.2
Expected volatility		230.2	%
Risk-free interest rate		4.7	%
Dividend yield		—	%
Exercise price	$	105.00

If factors or assumptions change, the estimated fair values could be materially different. The value of the Company’s derivative warrant liability would increase if a higher risk-free interest rate was used and would decrease if a lower risk-free interest rate was used. Similarly, a higher volatility assumption would increase the value of the liability, and a lower volatility assumption would decrease the value of the liability.

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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Note 9 - Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2024

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

	*Unrealized gains (losses) on available-for-sale securities*
Balance at December 31, 2023	$	10
Other comprehensive loss, net of tax		(14	)
Balance at March 31, 2024	$	(4	)
Other comprehensive loss, net of tax		(4	)
Balance at June 30, 2024	$	(8	)

	*Unrealized gains (losses) on available-for-sale securities*			*Change in fair value due to instrument-specific credit risk*			*Total*
Balance at December 31, 2022	$	(1,254	)	$	(25	)	$	(1,279	)
Other comprehensive income (loss), net of tax		490			(21	)		469
Balance at March 31, 2023	$	(764	)	$	(46	)	$	(810	)
Other comprehensive income, net of tax		420			—			420
Balance at June 30, 2023	$	(344	)	$	(46	)	$	(390	)

Note 6 - Leases - Maturity of Operating Lease Liabilities (Details) $ in Thousands	Jun. 30, 2024 USD ($)
2024 (remaining six months)	$ 1,230
2025	2,484
2026	2,559
2027	2,636
2028	2,716
Thereafter	8,400
Total lease payments	20,025
Less amount to discount to present value	(3,551)
Present value of lease liabilities	$ 16,474

Insider Trading Arrangements	3 Months Ended	6 Months Ended
Insider Trading Arrangements	Jun. 30, 2024 shares	Jun. 30, 2024 shares
ecd_TradingArrByIndTable
Material Terms of Trading Arrangement [Text Block]		Item 5. Other Information Rule 10b5-1 Trading Plans. During the three months ended June 30, 2024, Luis C. Dussan, a member of the Company's board of directors, in his capacity as the trustee of both the Luis Dussan Trust A U/A/D 5/18/2022 and the Jennifer Dussan Trust A U/A/D 5/18/2022, adopted identical trading plans for each trust intended to be a "Rule 10b5-1 trading arrangement," as that term is defined in Item 408(a) of Regulation S-K. Each plan was adopted on or about June 13, 2024 and provides the potential sale of up to 36,000 of the Company's common shares, for a cumulative total of 72,000 common shares. The trading plans will cease upon the earlier of September 30, 2025 or the completion of all transactions subject to the trading plans. During the three months ended June 30, 2024, no other director or officer of the Company adopted or terminated a "Rule 10b5-1 trading arrangement" or "non-Rule 10b5-1 trading arrangement" as each term is defined in Item 408(a) of Regulation S-K.
Trading Arrangement Adoption Date	June 13, 2024
Trading Arrangement, Individual Name	Luis C. Dussan
Trading Arrangement, Individual Title	a member of the Company's board of directors
Rule 10b5-1 Arrangement Adopted [Flag]	true
Trading Arrangement, Securities Aggregate Available Amount	72,000	72,000
Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Terminated [Flag]	false
Non-Rule 10b5-1 Arrangement Adopted [Flag]	false
Plan 1 [Member]
ecd_TradingArrByIndTable
Trading Arrangement, Securities Aggregate Available Amount	36,000	36,000
Plan 2 [Member]
ecd_TradingArrByIndTable
Trading Arrangement, Securities Aggregate Available Amount	36,000	36,000

Significant Accounting Policies (Policies)	6 Months Ended
Significant Accounting Policies (Policies)	Jun. 30, 2024
Accounting Policies [Abstract]
Use of Estimates, Policy [Policy Text Block]	Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Consolidation, Policy [Policy Text Block]	Principle of Consolidation and Liquidity The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. The Company has funded its operations primarily through the business combination and issuances of stock. As of June 30, 2024, the Company’s existing sources of liquidity included cash, cash equivalents, and marketable securities of $27,989. ASC 205-40, Presentation of Financial Statements - Going Concern, requires management to assess an entity’s ability to continue as a going concern within one year of the date the financial statements are issued. In each reporting period, including interim periods, an entity is required to assess conditions known and reasonably knowable as of the financial statement issuance date to determine whether it is probable an entity will not meet its financial obligations within one year from the financial statement issuance date. As is common in early-stage companies with limited operating histories, the Company is subject to risks and uncertainties such as its ability to develop and commercialize its products; produce and deliver lidar and software products meeting acceptable performance metrics; attract new and retain existing customers; develop, obtain, or progress strategic partnerships; secure an automotive OEM design win; secure additional capital to support the business plan; and other risks and uncertainties such as those described in Part II, Item 1A of this Quarterly Report on Form 10-Q. Since its inception, the Company has incurred net losses and negative cash flows from operations. As of June 30, 2024, the Company had an accumulated deficit of $355,841. For the six months ended June 30, 2024 and 2023, the Company incurred a net loss of $18,206 and $42,296, respectively, and the Company had net cash outflows from operating activities of $14,241 and $32,445, respectively. As of June 30, 2024, the Company had $27,989 of cash, cash equivalents, and marketable securities. As the Company is still in its early stages, it is expected to incur additional operating losses and negative cash flows as it continues to focus on achieving commercialization of its lidar solutions. When conditions and events, in the aggregate, impact an entity’s ability to continue as a going concern, management evaluates the mitigating effect of its plans to determine if it is probable that the plans will be effectively implemented, and, when implemented, the plans will mitigate the relevant conditions or events. The Company is dependent upon raising additional capital to provide the cash necessary to continue its ongoing operations. The Company has been able to do so; for example, during the second quarter of 2024 it was able to raise $5,541 in gross proceeds from financing activities. Should the Company not be able to raise additional capital, the Company will require alternative sources of liquidity to continue its operations over the next 12 months. In those circumstances, the Company would also plan to adjust spending in order to preserve and extend liquidity, and has plans to further reduce operating expenses and cash outlays should it need to. The Company believes that these plans can be successfully implemented and alleviate substantial doubt about the Company's ability to continue as a going concern, which will result in adequate cash flows to support its ongoing operations for at least one year following the date these financial statements are issued. Based upon the results of management’s assessment, which has been performed as of August 7, 2024, these condensed consolidated financial statements have been prepared on a going concern basis.
Reverse Stock Split [Policy Text Block]	Reverse Stock Split On December 27, 2023, the Company effected a 1-for-30 reverse stock split of its issued and outstanding shares of common stock (the "Reverse Stock Split"). Pursuant to the Reverse Stock Split, every thirty (30) shares of issued and outstanding shares of common stock were combined into one (1) share of common stock. The Company did not issue fractional shares in connection with the Reverse Stock Split. Stockholders who were otherwise entitled to fractional shares of common stock were instead entitled to receive a proportional cash payment. The number of shares of common stock issuable under our equity incentive plans and exercisable under the outstanding warrants were also proportionately adjusted. In connection with the Reverse Stock Split, there was no change to the number of shares authorized or in the par value per share of common stock of $0.0001. Accordingly, all historical per share data, number of shares issued and outstanding, stock awards, and other common stock equivalents for the periods presented in the accompanying condensed consolidated financial statements and notes thereto have been adjusted retroactively, where applicable, to reflect the Reverse Stock Split.
Concentration Risk, Credit Risk, Policy [Policy Text Block]	Concentration of Credit Risk Financial instruments which potentially subject the Company to concentration of credit risk consist primarily of cash, cash equivalents, and marketable securities, and accounts receivable. The Company places its cash and cash equivalents with major financial institutions, which management assesses to be of high credit quality, to limit the exposure of each investment. The Company’s marketable securities have investment grade ratings when purchased, which mitigates risk. The Company’s accounts receivable are derived from customers located in the U.S., Europe, and Asia-Pacific. The Company mitigates its credit risks by performing ongoing credit evaluations of its customers’ financial conditions. The Company generally does not require collateral.
New Accounting Pronouncements, Policy [Policy Text Block]	Recent Accounting Pronouncements In December 2023, the Financial Accounting Standards Board ("FASB"), issued Accounting Standards Update ("ASU") 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures, to increase the transparency and usefulness of income tax information through improvements to the income tax disclosures primarily related to the rate reconciliation and income taxes paid information. The guidance is effective for fiscal years beginning after December 15, 2024. The Company is currently in the process of evaluating the effects of the new guidance. In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This standard requires public companies, including entities with a single reportable segment, to disclose information about their reportable segments’ significant expenses and other items on an interim and annual basis to provide more transparency about the expenses they incur from revenue generating business units. The new standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024 on a retrospective basis, with early adoption permitted. The Company does not expect the adoption of the new standard to have a material effect on its consolidated financial statements.

Note 1 - Organization and Summary of Significant Accounting Policies (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Cash, Cash Equivalents, and Short-Term Investments	$ 27,989				$ 27,989
Retained Earnings (Accumulated Deficit)	(355,841)				(355,841)		$ (337,635)
Net Income (Loss) Attributable to Parent	$ (7,987)	$ (10,219)	$ (16,031)	$ (26,265)	(18,206)	$ (42,296)
Net Cash Provided by (Used in) Operating Activities					$ (14,241)	$ (32,445)
Common Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.0001				$ 0.0001		$ 0.0001

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount of accumulated undistributed earnings (deficit).

+ References + Details

Note 3 - Cash, Cash Equivalents, and Restricted Cash - Schedule of Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Cash and cash equivalents	$ 11,215	$ 16,932
Restricted cash	2,150	2,150
Total cash, cash equivalents, and restricted cash	$ 13,365	$ 19,082

Note 1 - Organization and Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2024

Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]

1.	ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

AEye, Inc. (the “Company” or “AEye”) is a provider of high-performance, active lidar systems for vehicle autonomy, advanced driver-assistance systems (ADAS), and smart industrial applications. AEye’s software-definable 4Sight^TM Intelligent Sensing Platform combines solid-state active lidar and integrated deterministic artificial intelligence to capture more intelligent information with less data, enabling faster, more accurate, and more reliable perception of the surroundings.

AEye, formerly known as CF Finance Acquisition Corp. III (“CF III”), was originally incorporated in Delaware on March 15, 2016 under the name CF SPAC Re Inc. On February 17, 2021, AEye Technologies, Inc., then known as AEye, Inc., entered into an Agreement and Plan of Merger with CF III. Based on CF III’s business activities, it was a “shell company” as defined under the Securities Exchange Act of 1934, as amended. On August 16, 2021, the business combination contemplated by the Agreement and Plan of Merger was closed and CF III changed its name to AEye, Inc.

The Company’s common stock and public warrants are listed on the Nasdaq Stock Market LLC (“Nasdaq”) under the symbols “LIDR” and “LIDRW”, respectively. Unless otherwise specified, “we,” “us,” “our,” “AEye,” and the “Company” refers to AEye, Inc.

Unaudited Condensed Consolidated Financial Statements

The accompanying condensed consolidated financial statements are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States of America ("U.S. GAAP") for interim financial statements and pursuant to the rules and regulations of the Securities and Exchange Commission. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. In the opinion of management, all adjustments considered necessary for fair presentation have been included. The accompanying interim unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and related notes thereto for the year ended December 31, 2023 included in the Company's Annual Report on Form 10-K for the year ended December 31, 2023.

Use of Estimates

The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

Principle of Consolidation and Liquidity

The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.

The Company has funded its operations primarily through the business combination and issuances of stock. As of June 30, 2024, the Company’s existing sources of liquidity included cash, cash equivalents, and marketable securities of $27,989.

ASC 205-40, Presentation of Financial Statements - Going Concern, requires management to assess an entity’s ability to continue as a going concern within one year of the date the financial statements are issued. In each reporting period, including interim periods, an entity is required to assess conditions known and reasonably knowable as of the financial statement issuance date to determine whether it is probable an entity will not meet its financial obligations within one year from the financial statement issuance date.

As is common in early-stage companies with limited operating histories, the Company is subject to risks and uncertainties such as its ability to develop and commercialize its products; produce and deliver lidar and software products meeting acceptable performance metrics; attract new and retain existing customers; develop, obtain, or progress strategic partnerships; secure an automotive OEM design win; secure additional capital to support the business plan; and other risks and uncertainties such as those described in Part II, Item 1A of this Quarterly Report on Form 10-Q.

Since its inception, the Company has incurred net losses and negative cash flows from operations. As of June 30, 2024, the Company had an accumulated deficit of $355,841. For the six months ended June 30, 2024 and 2023, the Company incurred a net loss of $18,206 and $42,296, respectively, and the Company had net cash outflows from operating activities of $14,241 and $32,445, respectively. As of June 30, 2024, the Company had $27,989 of cash, cash equivalents, and marketable securities. As the Company is still in its early stages, it is expected to incur additional operating losses and negative cash flows as it continues to focus on achieving commercialization of its lidar solutions.

When conditions and events, in the aggregate, impact an entity’s ability to continue as a going concern, management evaluates the mitigating effect of its plans to determine if it is probable that the plans will be effectively implemented, and, when implemented, the plans will mitigate the relevant conditions or events.

The Company is dependent upon raising additional capital to provide the cash necessary to continue its ongoing operations. The Company has been able to do so; for example, during the second quarter of 2024 it was able to raise $5,541 in gross proceeds from financing activities. Should the Company not be able to raise additional capital, the Company will require alternative sources of liquidity to continue its operations over the next 12 months. In those circumstances, the Company would also plan to adjust spending in order to preserve and extend liquidity, and has plans to further reduce operating expenses and cash outlays should it need to. The Company believes that these plans can be successfully implemented and alleviate substantial doubt about the Company's ability to continue as a going concern, which will result in adequate cash flows to support its ongoing operations for at least one year following the date these financial statements are issued.

Based upon the results of management’s assessment, which has been performed as of August 7, 2024, these condensed consolidated financial statements have been prepared on a going concern basis.

Reverse Stock Split

On December 27, 2023, the Company effected a 1-for-30 reverse stock split of its issued and outstanding shares of common stock (the "Reverse Stock Split"). Pursuant to the Reverse Stock Split, every thirty (30) shares of issued and outstanding shares of common stock were combined into one (1) share of common stock. The Company did not issue fractional shares in connection with the Reverse Stock Split. Stockholders who were otherwise entitled to fractional shares of common stock were instead entitled to receive a proportional cash payment. The number of shares of common stock issuable under our equity incentive plans and exercisable under the outstanding warrants were also proportionately adjusted.

In connection with the Reverse Stock Split, there was no change to the number of shares authorized or in the par value per share of common stock of $0.0001. Accordingly, all historical per share data, number of shares issued and outstanding, stock awards, and other common stock equivalents for the periods presented in the accompanying condensed consolidated financial statements and notes thereto have been adjusted retroactively, where applicable, to reflect the Reverse Stock Split.

Concentration of Credit Risk

Financial instruments which potentially subject the Company to concentration of credit risk consist primarily of cash, cash equivalents, and marketable securities, and accounts receivable. The Company places its cash and cash equivalents with major financial institutions, which management assesses to be of high credit quality, to limit the exposure of each investment. The Company’s marketable securities have investment grade ratings when purchased, which mitigates risk.

The Company’s accounts receivable are derived from customers located in the U.S., Europe, and Asia-Pacific. The Company mitigates its credit risks by performing ongoing credit evaluations of its customers’ financial conditions. The Company generally does not require collateral.

Recent Accounting Pronouncements

In December 2023, the Financial Accounting Standards Board ("FASB"), issued Accounting Standards Update ("ASU") 2023-09, Income Taxes (Topic 740) - Improvements to Income Tax Disclosures, to increase the transparency and usefulness of income tax information through improvements to the income tax disclosures primarily related to the rate reconciliation and income taxes paid information. The guidance is effective for fiscal years beginning after December 15, 2024. The Company is currently in the process of evaluating the effects of the new guidance.

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. This standard requires public companies, including entities with a single reportable segment, to disclose information about their reportable segments’ significant expenses and other items on an interim and annual basis to provide more transparency about the expenses they incur from revenue generating business units. The new standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024 on a retrospective basis, with early adoption permitted. The Company does not expect the adoption of the new standard to have a material effect on its consolidated financial statements.

Note 6 - Leases (Tables)

6 Months Ended

Jun. 30, 2024

Lease, Cost [Table Text Block]

	*Three months ended June 30,*				*Six months ended June 30,*
	*2024*		*2023*		*2024*		*2023*
Operating lease cost	$	582	$	602	$	1,171	$	1,204
Variable lease cost		85		80		169		159
Total operating lease cost	$	667	$	682	$	1,340	$	1,363

Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]

	*Operating leases*
Years ending - December 31:	*(unaudited)*
2024 (remaining six months)	$	1,230
2025		2,484
2026		2,559
2027		2,636
2028		2,716
Thereafter		8,400
Total lease payments		20,025
Less amount to discount to present value		(3,551	)
Present value of lease liabilities	$	16,474

Note 5 - Prepaid and Other Current Assets - Summary of Prepaid and Other Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Prepaid expenses	$ 1,666	$ 2,386
Advances to suppliers	48	79
Other	79	52
Total prepaid and other current assets	$ 1,793	$ 2,517

Note 2 - Fair Value Measurements - Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Cash and cash equivalents	$ 11,215	$ 16,932
Fair Value, Recurring [Member]
Unrealized Gain (Loss), before Tax	(8)	10
Total financial assets	27,518	35,958
Assets, Fair Value Disclosure	27,510	35,968
Total financial liabilities	39	26
Fair Value, Recurring [Member] \| Cash and Cash Equivalents [Member]
Assets, Fair Value Disclosure	10,736	16,377
Fair Value, Recurring [Member] \| Debt Securities Available for Sale [Member]
Assets, Fair Value Disclosure	16,774	19,591
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Recurring [Member] \| Money Market Funds [Member]
Cash and cash equivalents	9,464	16,377
Money market funds, fair value	9,464	16,377
Fair Value, Inputs, Level 1 [Member] \| Fair Value, Recurring [Member] \| Money Market Funds [Member] \| Cash and Cash Equivalents [Member]
Money market funds, fair value	9,464	16,377
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Recurring [Member] \| Private Placement Warrants [Member]
Private placement warrant liability	0	0
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Recurring [Member] \| Corporate Bond Securities [Member]
Debt Securities, Available-for-Sale, Amortized Cost	10,062	2,880
Unrealized Gain (Loss), before Tax	(3)	1
Debt Securities, Available-for-Sale	10,059	2,881
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Recurring [Member] \| Corporate Bond Securities [Member] \| Debt Securities Available for Sale [Member]
Debt Securities, Available-for-Sale	8,787	2,881
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Recurring [Member] \| Commercial Paper [Member]
Debt Securities, Available-for-Sale, Amortized Cost	6,135	8,809
Unrealized Gain (Loss), before Tax	(5)	5
Debt Securities, Available-for-Sale	6,130	8,814
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Recurring [Member] \| Commercial Paper [Member] \| Debt Securities Available for Sale [Member]
Debt Securities, Available-for-Sale	6,130	8,814
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Recurring [Member] \| US Government Debt Securities [Member]
Debt Securities, Available-for-Sale, Amortized Cost	1,857	7,892
Unrealized Gain (Loss), before Tax	0	4
Debt Securities, Available-for-Sale	1,857	7,896
Fair Value, Inputs, Level 2 [Member] \| Fair Value, Recurring [Member] \| US Government Debt Securities [Member] \| Debt Securities Available for Sale [Member]
Debt Securities, Available-for-Sale	1,857	7,896
Fair Value, Inputs, Level 3 [Member] \| Fair Value, Recurring [Member] \| Derivative Financial Instruments, Liabilities [Member]
Derivative warrant liability	$ 39	$ 26

Document And Entity Information - shares	6 Months Ended
Document And Entity Information - shares	Jun. 30, 2024	Aug. 05, 2024
Document Information [Line Items]
Entity Central Index Key	0001818644
Entity Registrant Name	AEye, Inc.
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2024
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2024
Document Transition Report	false
Entity File Number	333-259554
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	37-1827430
Entity Address, Address Line One	4670 Willow Road, Suite 125
Entity Address, City or Town	Pleasanton
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94588
City Area Code	925
Local Phone Number	400-4366
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		8,613,086
Warrant [Member]
Document Information [Line Items]
Title of 12(b) Security	Warrants to purchase one share of common stock
Trading Symbol	LIDRW
Security Exchange Name	NASDAQ
Common Stock [Member]
Document Information [Line Items]
Title of 12(b) Security	Common stock, $0.0001 par value per share
Trading Symbol	LIDR
Security Exchange Name	NASDAQ

Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
REVENUE:
Revenue from contract with customer	$ 32	$ 571	$ 52	$ 1,207
Cost of revenue	160	1,911	423	4,172
Gross loss	(128)	(1,340)	(371)	(2,965)
OPERATING EXPENSES:
Research and development	3,838	5,897	8,370	15,339
Sales and marketing	67	2,604	408	8,872
General and administrative	4,223	6,345	9,838	14,899
Total operating expenses	8,128	14,846	18,616	39,110
LOSS FROM OPERATIONS	(8,256)	(16,186)	(18,987)	(42,075)
OTHER INCOME (EXPENSE):
Change in fair value of convertible note and warrant liabilities	(15)	(116)	(13)	(926)
Interest income and other	228	301	423	578
Interest expense and other	56	(11)	373	165
Total other income (expense), net	269	174	783	(183)
Loss before income tax expense	(7,987)	(16,012)	(18,204)	(42,258)
Provision for income tax expense	0	19	2	38
Net loss	$ (7,987)	$ (16,031)	$ (18,206)	$ (42,296)
PER SHARE DATA
Net loss per share (basic and diluted) (in dollars per share)	$ (1.16)	$ (2.74)	$ (2.8)	$ (7.51)
Weighted average shares outstanding (basic and diluted) (in shares)	6,874,454	5,855,866	6,499,089	5,632,091
COMPREHENSIVE LOSS:
Net loss	$ (7,987)	$ (16,031)	$ (18,206)	$ (42,296)
Change in net unrealized gain (loss) on available-for-sale securities, net of tax	(4)	420	(18)	910
Change in fair value due to instrument-specific credit risk, net of tax	0	0	0	(21)
Comprehensive loss	(7,991)	(15,611)	(18,224)	(41,407)
Prototype Sales [Member]
REVENUE:
Revenue from contract with customer	6	245	26	370
Development Contracts [Member]
REVENUE:
Revenue from contract with customer	$ 26	$ 326	$ 26	$ 837

Note 4 - Inventories

6 Months Ended

Jun. 30, 2024

Inventory Disclosure [Text Block]

4.	INVENTORIES

Inventory, net of write-downs, as of June 30, 2024 and December 31, 2023 were as follows (in thousands):

	*June 30, 2024*		*December 31, 2023*
	(unaudited)
Raw materials	$	246	$	405
Work in-process		123		159
Finished goods		13		19
Total inventory, net	$	382	$	583

The Company also had $209 and $208 of non-current inventory (raw materials), net of write-downs, classified within other noncurrent assets on the condensed consolidated balance sheet as of June 30, 2024 and December 31, 2023, respectively.

The Company's current and non-current inventory as of June 30, 2024 and December 31, 2023 was written down by $5,097 and $5,062, respectively, in order to reduce inventory to the lower of cost or net realizable value.

Note 17 - Subsequent Events

6 Months Ended

Jun. 30, 2024

Subsequent Events [Text Block]

17.

SUBSEQUENT EVENTS

Management has evaluated subsequent events through August 7, 2024 and determined that there were no such events requiring recognition or disclosure in the condensed consolidated financial statements, other than as noted below.

On July 25, 2024, the Company entered into a Share Purchase Agreement ("Purchase Agreement") with an investor, in which the investor has committed to purchase, subject to certain limitations, up to $50,000 ("Total Commitment") of the Company's common stock. Under the terms and subject to the conditions of the Purchase Agreement, the Company has the right, but not the obligation, to sell to the investor, and the investor is obligated to purchase, up to the Total Commitment. Such sales of common stock by the Company, if any, will be subject to certain limitations, and may occur from time-to-time in the Company’s sole discretion, commencing once certain customary conditions are satisfied, including the filing and securing effectiveness of a resale registration statement with the U.S. Securities and Exchange Commission (the “SEC”) with respect to the shares to be sold to the investor under the Purchase Agreement.

Note 5 - Prepaid and Other Current Assets (Tables)

6 Months Ended

Jun. 30, 2024

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Table Text Block]

	*June 30, 2024*		*December 31, 2023*
	(unaudited)
Prepaid expenses	$	1,666	$	2,386
Advances to suppliers		48		79
Other		79		52
Total prepaid and other current assets	$	1,793	$	2,517

Note 4 - Inventories - Summary of Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Raw materials	$ 246	$ 405
Work in-process	123	159
Finished goods	13	19
Total inventory, net	$ 382	$ 583

Note 11 - Stock-based Compensation - Allocation of Share-based Compensation Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Share-Based Payment Arrangement, Expense	$ 1,740	$ 4,110	$ 4,754	$ 10,623
Cost of Sales [Member]
Share-Based Payment Arrangement, Expense	0	34	0	95
Research and Development Expense [Member]
Share-Based Payment Arrangement, Expense	499	1,530	1,708	3,808
Selling and Marketing Expense [Member]
Share-Based Payment Arrangement, Expense	3	674	185	2,042
General and Administrative Expense [Member]
Share-Based Payment Arrangement, Expense	$ 1,238	$ 1,872	$ 2,861	$ 4,678

Note 11 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2024

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	*Three months ended June 30,*				*Six months ended June 30,*
	*2024*		*2023*		*2024*		*2023*
Cost of revenue	$	—	$	34	$	—	$	95
Research and development		499		1,530		1,708		3,808
Sales and marketing		3		674		185		2,042
General and administrative		1,238		1,872		2,861		4,678
Total stock-based compensation	$	1,740	$	4,110	$	4,754	$	10,623

Note 2 - Fair Value Measurements (Details Textual) - USD ($) $ in Millions	Jun. 30, 2024	Sep. 15, 2022
Class of Warrant or Right, Term Of Contract (Year)	4 years
The 2022 Note [Member] \| Convertible Debt [Member]
Debt Instrument, Face Amount		$ 10.5

Note 7 - Convertible Notes (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	May 10, 2024	Sep. 15, 2022	Sep. 14, 2022
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	Secured Overnight Financing Rate (SOFR) [Member]
An Investor [Member]
Proceeds From Issuance of Common Stock and Debt	$ 1,000
Security Purchase Agreement [Member] \| An Investor [Member]
Stock Issued During Period, Shares, New Issues (in shares)	330,823
Convertible Note 2022 One [Member]
Debt Instrument, Face Amount			$ 10,500
Proceeds from Issuance of Debt			10,000
Convertible Note 2022 Two [Member]
Debt Instrument, Face Amount			10,500
Proceeds from Issuance of Debt			10,000
Convertible Note 2022 [Member]
Proceeds from Issuance of Debt			$ 20,000
Senior Unsecured Convertible Note 2022 [Member]
Debt Instrument, Face Amount		$ 10,500
Proceeds from Issuance of Debt		$ 9,850
Debt Instrument, Interest Rate, Stated Percentage		5.00%
Debt Instrument, Discount on Issuance, Percentage		4.76%
Debt Instrument, Convertible, Conversion Price (in dollars per share)		$ 2.5
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger		95.00%
Debt Instrument, Monthly Redemption Premium, Percentage		5.00%
Senior Unsecured Convertible Note 2022 [Member] \| Acceleration Date [Member]
Debt Instrument, Convertible, Conversion Price (in dollars per share)		$ 9
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger		95.00%
Debt Instrument, Convertible, Acceleration Payment Monthly Limit		$ 2,800
Convertible Note 2024 [Member] \| An Investor [Member]
Debt Instrument, Face Amount	$ 146
Debt Instrument, Term (Year)	5 years
Debt Instrument, Basis Spread on Variable Rate	1.00%

Note 7 - Convertible Notes

6 Months Ended

Jun. 30, 2024

Debt Disclosure [Text Block]

7.	CONVERTIBLE NOTES

2022 Convertible Note

On September 14, 2022, the Company entered into a Securities Purchase Agreement with an investor allowing for the sale and issue of up to two convertible notes, each with a principal balance of $10,500 and gross cash proceeds of $10,000, for a total of $20,000 in proceeds between the two issuances (each, a "Note Closing"). The first Note Closing ("First Closing") occurred on September 15, 2022, and the Company entered into a Senior Unsecured Convertible Note with the investor pursuant to which the Company issued to the investor one convertible note ("2022 Note") with a principal balance of $10,500 for net cash proceeds of $9,850. As part of the First Closing, the Company also issued warrants to the investor. The second Note Closing ("Second Closing") could have occurred up to March 15, 2024, upon which the Company's right to effect a Second Closing automatically terminated. As of March 15, 2024, the Company did not effect a Second Closing.

The 2022 Note bore interest at an annual rate of 5.0%, in addition to an original issue discount of 4.76%, and had an initial maturity date of March 15, 2024.

Beginning December 14, 2022, and the first trading day of each subsequent month (each a "Monthly Redemption Date" or an "Installment Date"), the Company was required to redeem the Monthly Redemption Amount until the 2022 Note was fully redeemed. The Monthly Redemption Amount, in most instances, was 1/15th of the original principal amount, plus any amount accelerated pursuant to the 2022 Note, accrued but unpaid interest, and late fees, if any. The principal and interest could be settled in cash or, so long as certain equity conditions were met and at the option of the Company, shares of common stock, which was payable together with the Monthly Redemption Amount.

If the Company elected to settle the Monthly Redemption Amount in shares of common stock, the number of shares to be settled was based on an Installment Conversion Price equal to the lower of (i) $2.50 or (ii) 95% of the lowest daily volume weighted average price of the common stock during the five trading days immediately preceding the applicable Monthly Redemption Date. If the Company elected to settle the Monthly Redemption Amount in cash, the Monthly Redemption Amount would have included a 5% premium.

The investor was permitted to accelerate up to four Monthly Redemption Amounts in any calendar month (each, an "Acceleration," and each such amount, an "Acceleration Amount", and the Conversion Date of any such Acceleration, each an "Acceleration Date") at the Acceleration Conversion Price, subject to a $2,800 limit per month. The Acceleration Conversion Price was the lower of (i) the Installment Conversion Price for such current Installment Date or (ii) the greater of $9.00 and 95% of the lowest daily volume weighted average price of the Common Stock during the five trading days immediately preceding the Acceleration Date.

If either the relevant Installment Conversion Price or Acceleration Conversion Price, as applicable, was less than $9.00 per share, then a Conversion Floor Price Condition existed and the Company must deliver to the investor the Conversion Installment Floor Amount in cash, in addition to the required number of shares, which were valued at $9.00 regardless of the actual trading price of the Company’s shares. The Conversion Installment Floor Amount was an amount in cash equal to the product obtained by multiplying (A) the higher of (i) the highest price that the common stock traded at on the Trading Day immediately preceding the relevant Share Delivery Date and (ii) the applicable Installment Conversion Price or Acceleration Conversion Price and (B) the difference obtained by subtracting (i) the number of shares of common stock delivered to the investor on the applicable Share Delivery Date with respect to such Conversion from (ii) the quotient obtained by dividing (x) the applicable Installment or Acceleration amount subject to such Conversion, by (y) the applicable Installment Conversion Price. Interest payments were also trued-up in cash when the value of the Company’s shares was below $9.00 per share.

The Company elected to apply the fair value option to the measurement of the 2022 Note. As a result of adopting the fair value option, no embedded derivatives were bifurcated from the 2022 Note. The Company classified the 2022 Note as a liability at fair value and remeasured the 2022 Note to fair value at each reporting period. The fair value measurement included the assumption of accrued interest and expense and thus a separate amount was not reflected on the condensed consolidated statement of operations.

The 2022 Note was fully settled through Monthly Redemptions and Accelerations in 2023. As part of the debt extinguishment, the Company reclassified the accumulated change in fair value due to instrument-specific credit risk out of accumulated other comprehensive loss on the condensed consolidated balance sheet and into interest expense and other on the condensed consolidated statement of operations and comprehensive loss.

2024 Convertible Note

On May 10, 2024, the Company entered into a Securities Purchase Agreement with an investor for the sale and issuance of 330,823 shares of common stock and a 5-year convertible note with a principal balance of $146 ("2024 Note") for total gross cash proceeds of $1,000. The 2024 Note bears interest at an annual rate equal to the Secured Overnight Financing Rate plus 1.0%, which is compounded quarterly in arrears, and has a maturity date of June 4, 2029. At maturity, the principal balance and accrued, unpaid and uncapitalized interest can be settled in cash, shares of common stock based on the closing price of the common stock as of the immediately preceding trading day, or any combination of the foregoing at the option of the investor.

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
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-Section S99
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Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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Reference 14: http://www.xbrl.org/2003/role/disclosureRef
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Reference 15: http://www.xbrl.org/2003/role/disclosureRef
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Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
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Reference 20: http://www.xbrl.org/2003/role/disclosureRef
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Reference 21: http://www.xbrl.org/2003/role/disclosureRef
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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (18,206)	$ (42,296)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	56	666
Gain on sale of property and equipment, net	0	(52)
Noncash lease expense relating to operating lease right-of-use assets	727	706
Impairment of right-of-use assets	0	47
Inventory write-downs, net of scrapped inventory	112	544
Change in fair value of convertible note and warrant liabilities	13	926
Stock-based compensation	4,754	10,623
Amortization of premiums and accretion of discounts on marketable securities, net of change in accrued interest	(428)	(65)
Expected credit losses	34	0
Changes in operating assets and liabilities:
Accounts receivable, net	90	327
Inventories, current and noncurrent, net	89	(2,502)
Prepaid and other current assets	724	2,884
Other noncurrent assets	171	(2,164)
Accounts payable	108	282
Accrued expenses and other current liabilities	(1,402)	(785)
Operating lease liabilities	(799)	(749)
Contract liabilities	74	(837)
Other noncurrent liabilities	(358)	0
Net cash used in operating activities	(14,241)	(32,445)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(234)	(808)
Proceeds from sale of property and equipment	0	96
Purchases of marketable securities	(15,173)	0
Proceeds from redemptions and maturities of marketable securities	18,400	35,850
Net cash provided by investing activities	2,993	35,138
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	134	391
Proceeds from the issuance of convertible note	146	0
Payments for convertible note redemptions	0	(4,973)
Taxes paid related to the net share settlement of equity awards	(47)	(1,051)
Proceeds from issuance of common stock under the Common Stock Purchase Agreements	5,560	0
Stock issuance costs related to the Common Stock Purchase Agreements	(288)	0
Proceeds from issuance of common stock through the Employee Stock Purchase Plan	26	118
Net cash provided by (used in) financing activities	5,531	(5,515)
NET DECREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(5,717)	(2,822)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—Beginning of period	19,082	21,214
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—End of period	13,365	18,392
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for income taxes	1	10
Cash paid for interest	0	106
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Purchases of property and equipment included in accounts payable and accrued liabilities	0	48
Conversion of convertible notes and accrued interest into Class A common stock	0	3,009
Stock issuance costs included in accounts payable and accrued liabilities	128	0
Taxes related to net share settlement of equity awards included in accrued liabilities	$ 0	$ 1

Note 12 - Revenue (Tables)

6 Months Ended

Jun. 30, 2024

Disaggregation of Revenue [Table Text Block]

	*Three months ended June 30,*				*Six months ended June 30,*
	*2024*		*2023*		*2024*		*2023*
Revenue by primary geographical market:
United States	$	26	$	443	$	41	$	990
Europe		6		128		11		160
Asia-Pacific		—		—		—		57
Total	$	32	$	571	$	52	$	1,207

Revenue by timing of recognition:
Recognized at a point in time	$	6	$	245	$	26	$	370
Recognized over time		26		326		26		837
Total	$	32	$	571	$	52	$	1,207

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

	*Six months ended June 30,*
	*2024*		*2023*
Beginning balance	$	—	$	987
Revenue recognized that was included in the contract liabilities beginning balance		—		(837	)
Increase due to cash received and not recognized as revenue and billings in excess of revenue recognized during the period		74		—
Ending balance	$	74	$	150

Note 2 - Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2024

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	*Fair Value Measured as of June 30, 2024 Using:*
	*Adjusted Cost*		*Unrealized Losses*			*Fair Value*		*Cash and Cash Equivalent*		*Marketable Securities*
Assets
Level 1
Money market funds	$	9,464	$	—		$	9,464	$	9,464	$	—
Level 2
Corporate bonds		10,062		(3	)		10,059		1,272		8,787
Commercial paper		6,135		(5	)		6,130		—		6,130
U.S. Government securities		1,857		—			1,857		—		1,857
Total financial assets	$	27,518	$	(8	)	$	27,510	$	10,736	$	16,774
Liabilities
Level 2
Private placement warrant liability	$	—	$	—		$	—	$	—	$	—
Level 3
Derivative warrant liability		—		—			39		—		—
Total financial liabilities	$	—	$	—		$	39	$	—	$	—

	*Fair Value Measured as of December 31, 2023 Using:*
	*Adjusted Cost*		*Unrealized Gains*		*Fair Value*		*Cash and Cash Equivalent*		*Marketable Securities*
Assets
Level 1
Money market funds	$	16,377	$	—	$	16,377	$	16,377	$	—
Level 2
Corporate bonds		2,880		1		2,881		—		2,881
Commercial paper		8,809		5		8,814		—		8,814
U.S. Government securities		7,892		4		7,896		—		7,896
Total financial assets	$	35,958	$	10	$	35,968	$	16,377	$	19,591
Liabilities
Level 2
Private placement warrant liability	$	—	$	—	$	—	$	—	$	—
Level 3
Derivative warrant liability		—		—		26		—		—
Total financial liabilities	$	—	$	—	$	26	$	—	$	—

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	*Derivative Warrant Liability*
Balance at December 31, 2023	$	26
Additions		—
Change in fair value included in other income (expense), net		13
Balance at June 30, 2024	$	39

Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]

	*June 30, 2024*
Expected term (years)		2.2
Expected volatility		230.2	%
Risk-free interest rate		4.7	%
Dividend yield		—	%
Exercise price	$	105.00

Note 16 - Related Parties

6 Months Ended

Jun. 30, 2024

16.

RELATED PARTIES

From November 2016 to December 2023, the Company employed a sibling of Mr. Dussan, a director and the Company’s former Chief Technology Officer, who held the position of Director, Human Resources during 2023. For the six months ended June 30, 2023, Mr. Dussan’s sibling received total cash compensation of $77 and was granted 2,000 RSUs. In addition, he participated in all other benefits that the Company generally offers to all of its employees. There were no related party transactions for the six months ended June 30, 2024.

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/1943274/2147480990/946-20-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Note 16 - Related Parties (Details Textual) - Restricted Stock Units (RSUs) [Member] - Mr. Dussan's Sibling [Member] $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($) shares
Payments to Employees \| $	$ 77
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) \| shares	2,000

Note 13 - Restructuring

6 Months Ended

Jun. 30, 2024

Restructuring and Related Activities Disclosure [Text Block]

13.

Restructuring

In 2023, the Company implemented a revised strategic plan, which focused on key products and critical customer engagements in the Automotive market, and aligned the Company's operations with evolving business needs by focusing on a transition from research and development to the commercialization of the Company's automotive products, while winding down the existing industrial product and reducing fixed operating costs.

As a result of the implementation of the revised strategic plan, the Company recorded restructuring charges of $0 and $123 in the three and six months ended June 30, 2024, respectively, and $45 and $1,298 in the three and six months ended June 30, 2023, respectively, primarily relating to one-time employee termination benefits and losses on purchase commitments. Restructuring-related liabilities are included in accrued expenses and other current liabilities in the condensed consolidated balance sheets.

Restructuring activity is summarized as follows as of June 30, 2024 (in thousands):

	*One-time employee termination benefits*			*Losses on purchase commitments*			*Other*			*Total*
Balance as of December 31, 2023	$	402		$	233		$	56		$	691
Charges		18			105			—			123
Cash payments		(220	)		(2	)		(23	)		(245	)
Balance as of March 31, 2024	$	200		$	336		$	33		$	569
Charges		—			—			—			—
Cash payments		(200	)		(34	)		—			(234	)
Balance as of June 30, 2024	$	—		$	302		$	33		$	335

Restructuring charges were included in the condensed consolidated statements of operations and comprehensive loss during the three and six months ended June 30, 2024 and 2023 as follows (in thousands):

	*Three months ended June 30,*				*Six months ended June 30,*
	*2024*		*2023*		*2024*		*2023*
Cost of revenue	$	—	$	—	$	105	$	50
Research and development		—		—		—		503
Sales and marketing		—		45		18		558
General and administrative		—		—		—		187
Total restructuring charges	$	—	$	45	$	123	$	1,298

Note 5 - Prepaid and Other Current Assets

6 Months Ended

Jun. 30, 2024

Prepaid and Other Current Assets [Text Block]

5.	PREPAID AND OTHER CURRENT ASSETS

Prepaid and other current assets as of June 30, 2024 and December 31, 2023 were as follows (in thousands):

	*June 30, 2024*		*December 31, 2023*
	(unaudited)
Prepaid expenses	$	1,666	$	2,386
Advances to suppliers		48		79
Other		79		52
Total prepaid and other current assets	$	1,793	$	2,517

The Company's advances to suppliers as of June 30, 2024 and December 31, 2023 was written down by $1,385 associated with the winding down of its existing industrial product as part of its revised strategic plan. See Note 13, Restructuring, for further details.

Note 3 - Cash, Cash Equivalents, and Restricted Cash (Tables)

6 Months Ended

Jun. 30, 2024

Schedule of Cash and Cash Equivalents [Table Text Block]

	*June 30, 2024*		*December 31, 2023*
	(unaudited)
Cash and cash equivalents	$	11,215	$	16,932
Restricted cash		2,150		2,150
Total cash, cash equivalents, and restricted cash	$	13,365	$	19,082

Note 4 - Inventories (Tables)

6 Months Ended

Jun. 30, 2024

Schedule of Inventory, Current [Table Text Block]

	*June 30, 2024*		*December 31, 2023*
	(unaudited)
Raw materials	$	246	$	405
Work in-process		123		159
Finished goods		13		19
Total inventory, net	$	382	$	583

Note 13 - Restructuring (Details Textual) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Restructuring Charges	$ 0	$ 123	$ 45	$ 123	$ 1,298

Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Jun. 30, 2024	Dec. 31, 2023
Preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred Stock, Shares Outstanding	0	0
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in shares)	600,000,000	600,000,000
Common stock, shares issued (in shares)	8,437,733	6,310,090
Common stock, shares outstanding (in shares)	8,437,733	6,310,090

Note 2 - Fair Value Measurements - Summary of Fair Value Measurement Inputs and Valuation Techniques (Details) - Warrant Liability [Member] - Monte Carlo Simulation Model [Member]	Jun. 30, 2024
Measurement Input, Expected Term [Member]
Derivative Liability, Measurement Input	2.2
Measurement Input, Price Volatility [Member]
Derivative Liability, Measurement Input	2.302
Measurement Input, Risk Free Interest Rate [Member]
Derivative Liability, Measurement Input	0.047
Measurement Input, Expected Dividend Rate [Member]
Derivative Liability, Measurement Input	0
Measurement Input, Exercise Price [Member]
Derivative Liability, Measurement Input	105

Note 6 - Leases - Summary of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating lease cost	$ 582	$ 602	$ 1,171	$ 1,204
Variable lease cost	85	80	169	159
Total operating lease cost	$ 667	$ 682	$ 1,340	$ 1,363

Note 8 - Interest Expense and Other (Tables)

6 Months Ended

Jun. 30, 2024

Schedule of Interest Expense and Other Nonoperating Expense [Table Text Block]

	*Three months ended June 30,*						*Six months ended June 30,*
	*2024*			*2023*			*2024*			*2023*
Amortization of premiums (accretion of discounts) on marketable securities, net	$	(170	)	$	(41	)	$	(441	)	$	(229	)
Expected credit losses		20			—			34			—
Impairment of right-of-use assets		—			47			—			47
Other		94			5			34			17
Interest expense and other	$	(56	)	$	11		$	(373	)	$	(165	)

Note 13 - Restructuring (Tables)

6 Months Ended

Jun. 30, 2024

Restructuring and Related Costs [Table Text Block]

	*One-time employee termination benefits*			*Losses on purchase commitments*			*Other*			*Total*
Balance as of December 31, 2023	$	402		$	233		$	56		$	691
Charges		18			105			—			123
Cash payments		(220	)		(2	)		(23	)		(245	)
Balance as of March 31, 2024	$	200		$	336		$	33		$	569
Charges		—			—			—			—
Cash payments		(200	)		(34	)		—			(234	)
Balance as of June 30, 2024	$	—		$	302		$	33		$	335

	*Three months ended June 30,*				*Six months ended June 30,*
	*2024*		*2023*		*2024*		*2023*
Cost of revenue	$	—	$	—	$	105	$	50
Research and development		—		—		—		503
Sales and marketing		—		45		18		558
General and administrative		—		—		—		187
Total restructuring charges	$	—	$	45	$	123	$	1,298

Note 14 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Income Tax Expense (Benefit)	$ 0	$ 19	$ 2	$ 38

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Note 3 - Cash, Cash Equivalents, and Restricted Cash

6 Months Ended

Jun. 30, 2024

Cash and Cash Equivalents Disclosure [Text Block]

3.	CASH, CASH EQUIVALENTS, AND RESTRICTED CASH

Cash, cash equivalents, and restricted cash as of June 30, 2024 and December 31, 2023 were as follows (in thousands):

	*June 30, 2024*		*December 31, 2023*
	(unaudited)
Cash and cash equivalents	$	11,215	$	16,932
Restricted cash		2,150		2,150
Total cash, cash equivalents, and restricted cash	$	13,365	$	19,082

Note 8 - Interest Expense and Other - Schedule of Interest Expense and Other Nonoperating Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Amortization of premiums (accretion of discounts) on marketable securities, net	$ (170)	$ (41)	$ (441)	$ (229)
Expected credit losses	20	0	34	0
Impairment of right-of-use assets	0	47	0	47
Other	94	5	34	17
Interest expense and other	$ (56)	$ 11	$ (373)	$ (165)

Note 14 - Income Taxes

6 Months Ended

Jun. 30, 2024

Income Tax Disclosure [Text Block]

14.

INCOME TAXES

For the three and six months ended June 30, 2024, the Company recognized $0 and $2 provision for income taxes, respectively. For the three and six months ended June 30, 2023, the Company recognized $19 and $38 provision for income taxes, respectively. The income tax rates vary from the federal and state statutory rates due to the valuation allowances on the Company's net operating losses and foreign tax rate differences. The Company computes its quarterly income tax provision by using a forecasted annual effective tax rate and adjusts for any discrete items arising during the quarter.

The entire disclosure for income tax.

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Note 15 - Commitments and Contingencies

6 Months Ended

Jun. 30, 2024

Commitments and Contingencies Disclosure [Text Block]

15.

COMMITMENTS AND CONTINGENCIES

Legal matters

The Company may be subject to legal proceedings and claims that arise in the ordinary course of business. Management is not currently aware of any matters that will have a material effect on the financial position, results of operations, or cash flows of the Company.

Note 10 - Net Loss Per Share

6 Months Ended

Jun. 30, 2024

Earnings Per Share [Text Block]

10.

NET LOSS PER SHARE

The following table sets forth the basic and diluted net loss per share attributable to common stockholders for the periods presented (in thousands, except share amounts and per share data):

	*Three months ended June 30,*						*Six months ended June 30,*
	*2024*			*2023*			*2024*			*2023*
Numerator:
Net loss attributable to common stockholders	$	(7,987	)	$	(16,031	)	$	(18,206	)	$	(42,296	)
Denominator:
Weighted average common shares outstanding - Basic		6,874,454			5,855,866			6,499,089			5,632,091
Weighted average common shares outstanding - Diluted		6,874,454			5,855,866			6,499,089			5,632,091

Net loss per share attributable to common stockholders - Basic and Diluted	$	(1.16	)	$	(2.74	)	$	(2.80	)	$	(7.51	)

Due to net losses for the six months ended June 30, 2024 and 2023, basic and diluted net loss per share were the same, as the effect of all potentially dilutive securities would have been anti-dilutive. The following table sets forth the anti-dilutive common share equivalents for the periods listed:

	*Six months ended June 30,*
	*2024*		*2023*
Common stock options issued and outstanding		144,287		416,634
Unvested restricted stock units		715,297		876,578
Warrants		319,443		319,443
Common Stock Purchase Agreement		206,780		990,681
Conversion of convertible notes		75,469		307,841
ESPP		30,679		213,196
Total		1,491,955		3,124,373

Condensed Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
BALANCE (in shares) at Dec. 31, 2022	0	5,436,637
Balance at December 31, 2023 at Dec. 31, 2022	$ 0	$ 1	$ 345,757	$ (1,279)	$ (250,509)	$ 93,970
Stock-based compensation	$ 0	$ 0	6,513	0	0	6,513
Issuance of common stock upon vesting of restricted stock units (in shares)	0	99,460
Taxes related to net share settlement of equity awards (in shares)	0	(44,028)
Taxes related to net share settlement of equity awards	$ 0	$ 0	(867)	0	0	(867)
Other comprehensive loss, net of tax	0	0	0	469	0	469
Net loss	$ 0	$ 0	0	0	(26,265)	(26,265)
Issuance of common stock upon exercise of options (in shares)	0	68,969
Issuance of common stock upon exercise of options	$ 0	$ 0	391	0	0	391
Conversion of convertible note into common stock (in shares)	0	137,947
Conversion of convertible note into common stock	$ 0	$ 0	1,755	0	0	1,755
BALANCE (in shares) at Mar. 31, 2023	0	5,698,985
Balance at March 31, 2024 at Mar. 31, 2023	$ 0	$ 1	353,549	(810)	(276,774)	75,966
BALANCE (in shares) at Dec. 31, 2022	0	5,436,637
Balance at December 31, 2023 at Dec. 31, 2022	$ 0	$ 1	345,757	(1,279)	(250,509)	93,970
Net loss						(42,296)
BALANCE (in shares) at Jun. 30, 2023	0	6,047,343
Balance at March 31, 2024 at Jun. 30, 2023	$ 0	$ 1	358,850	(390)	(292,805)	65,656
BALANCE (in shares) at Mar. 31, 2023	0	5,698,985
Balance at December 31, 2023 at Mar. 31, 2023	$ 0	$ 1	353,549	(810)	(276,774)	75,966
Stock-based compensation	$ 0	$ 0	4,110	0	0	4,110
Issuance of common stock upon vesting of restricted stock units (in shares)	0	85,416
Taxes related to net share settlement of equity awards (in shares)	0	(29,861)
Taxes related to net share settlement of equity awards	$ 0	$ 0	(181)	0	0	(181)
Other comprehensive loss, net of tax	0	0	0	420	0	420
Net loss	$ 0	$ 0	0	0	(16,031)	(16,031)
Issuance of common stock through Employee Stock Purchase Plan (in shares)	0	22,137
Issuance of common stock through Employee Stock Purchase Plan	$ 0	$ 0	118	0	0	118
Conversion of convertible note into common stock (in shares)	0	270,666
Conversion of convertible note into common stock	$ 0	$ 0	1,254	0	0	1,254
BALANCE (in shares) at Jun. 30, 2023	0	6,047,343
Balance at March 31, 2024 at Jun. 30, 2023	$ 0	$ 1	358,850	(390)	(292,805)	65,656
BALANCE (in shares) at Dec. 31, 2023	0	6,310,090
Balance at December 31, 2023 at Dec. 31, 2023	$ 0	$ 1	366,647	10	(337,635)	29,023
Stock-based compensation	$ 0	$ 0	3,014	0	0	3,014
Issuance of common stock upon vesting of restricted stock units (in shares)	0	98,623
Taxes related to net share settlement of equity awards (in shares)	0	(34,694)
Taxes related to net share settlement of equity awards	$ 0	$ 0	(45)	0	0	(45)
Issuance of common stock under the Common Stock Purchase Agreement (in shares)	0	129,000
Issuance of common stock under the Common Stock Purchase Agreement	$ 0	$ 0	165	0	0	165
Other comprehensive loss, net of tax	0	0	0	(14)	0	(14)
Net loss	$ 0	$ 0	0	0	(10,219)	(10,219)
BALANCE (in shares) at Mar. 31, 2024	0	6,503,019
Balance at March 31, 2024 at Mar. 31, 2024	$ 0	$ 1	369,781	(4)	(347,854)	21,924
BALANCE (in shares) at Dec. 31, 2023	0	6,310,090
Balance at December 31, 2023 at Dec. 31, 2023	$ 0	$ 1	366,647	10	(337,635)	29,023
Net loss						(18,206)
BALANCE (in shares) at Jun. 30, 2024	0	8,437,733
Balance at March 31, 2024 at Jun. 30, 2024	$ 0	$ 1	376,658	(8)	(355,841)	20,810
BALANCE (in shares) at Mar. 31, 2024	0	6,503,019
Balance at December 31, 2023 at Mar. 31, 2024	$ 0	$ 1	369,781	(4)	(347,854)	21,924
Stock-based compensation	$ 0	$ 0	1,740	0	0	1,740
Issuance of common stock upon vesting of restricted stock units (in shares)	0	167,143
Taxes related to net share settlement of equity awards (in shares)	0	(1,292)
Taxes related to net share settlement of equity awards	$ 0	$ 0	(2)	0	0	(2)
Issuance of common stock under the Common Stock Purchase Agreement (in shares)	0	1,693,929
Issuance of common stock under the Common Stock Purchase Agreement	$ 0	$ 0	5,395	0	0	5,395
Other comprehensive loss, net of tax	0	0	0	(4)	0	(4)
Net loss	$ 0	$ 0	0	0	(7,987)	(7,987)
Issuance of common stock upon exercise of options (in shares)	0	44,255
Issuance of common stock upon exercise of options	$ 0	$ 0	134	0	0	134
Stock issuance costs related to Common Stock Purchase Agreements	$ 0	$ 0	(416)	0	0	(416)
Issuance of common stock through Employee Stock Purchase Plan (in shares)	0	30,679
Issuance of common stock through Employee Stock Purchase Plan	$ 0	$ 0	26	0	0	26
BALANCE (in shares) at Jun. 30, 2024	0	8,437,733
Balance at March 31, 2024 at Jun. 30, 2024	$ 0	$ 1	$ 376,658	$ (8)	$ (355,841)	$ 20,810

Note 17 - Subsequent Events (Details Textual) $ in Millions	Jul. 25, 2024 USD ($)
Share Purchase Agreement [Member] \| Subsequent Event [Member]
Sale Of Stock, Common Stock, Value, Maximum	$ 50

Note 10 - Net Loss Per Share - Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share (Details) - shares	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Antidilutive Securities (in shares)	1,491,955	3,124,373
Share-Based Payment Arrangement, Option [Member]
Antidilutive Securities (in shares)	144,287	416,634
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities (in shares)	715,297	876,578
Warrant [Member]
Antidilutive Securities (in shares)	319,443	319,443
Common Stock Purchase Agreement [Member]
Antidilutive Securities (in shares)	206,780	990,681
Convertible Debt [Member]
Antidilutive Securities (in shares)	75,469	307,841
Employee Stock [Member]
Antidilutive Securities (in shares)	30,679	213,196

Note 12 - Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue from contract with customer	$ 32	$ 571	$ 52	$ 1,207
Transferred at Point in Time [Member]
Revenue from contract with customer	6	245	26	370
Transferred over Time [Member]
Revenue from contract with customer	26	326	26	837
UNITED STATES
Revenue from contract with customer	26	443	41	990
Europe [Member]
Revenue from contract with customer	6	128	11	160
Asia [Member]
Revenue from contract with customer	$ 0	$ 0	$ 0	$ 57

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Subparagraph (i)
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
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-Section 50
-Paragraph 4
-Subparagraph (a)
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-URI https://asc.fasb.org/1943274/2147479806/606-10-50-4

Note 4 - Inventories (Details Textual) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Inventory, Noncurrent	$ 209	$ 208
Inventory, Accumulated Write Down	$ 5,097	$ 5,062

Note 12 - Revenue (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023	Dec. 31, 2022
Revenue from Contract with Customer, Excluding Assessed Tax	$ 32	$ 571	$ 52	$ 1,207
Contract with Customer, Liability	74	150	74	150	$ 0	$ 987
Product [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	6	245	26	370
Technology Service [Member]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 26	$ 326	$ 26	$ 837

Note 2 - Fair Value Measurements - Summary of Changes in Fair Value of Level 3 Financial Instruments (Details) - Warrant Liability [Member] $ in Thousands	6 Months Ended
	Jun. 30, 2024 USD ($)
Balance	$ 26
Additions	0
Change in fair value included in other income (expense), net	13
Balance	$ 39

Note 8 - Interest Expense and Other

6 Months Ended

Jun. 30, 2024

Other Nonoperating Income and Expense [Text Block]

8.	INTEREST EXPENSE AND OTHER

Interest expense and other for the three and six months ended June 30, 2024 and 2023 consisted of the following (in thousands):

	*Three months ended June 30,*						*Six months ended June 30,*
	*2024*			*2023*			*2024*			*2023*
Amortization of premiums (accretion of discounts) on marketable securities, net	$	(170	)	$	(41	)	$	(441	)	$	(229	)
Expected credit losses		20			—			34			—
Impairment of right-of-use assets		—			47			—			47
Other		94			5			34			17
Interest expense and other	$	(56	)	$	11		$	(373	)	$	(165	)

Note 12 - Revenue - Summary of Contract Liability (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Beginning balance	$ 0	$ 987
Revenue recognized that was included in the contract liabilities beginning balance	0	(837)
Increase due to cash received and not recognized as revenue and billings in excess of revenue recognized during the period	74	0
Ending balance	$ 74	$ 150

Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 11,215	$ 16,932
Marketable securities	16,774	19,591
Accounts receivable, net	7	131
Inventories, net	382	583
Prepaid and other current assets	1,793	2,517
Total current assets	30,171	39,754
Right-of-use assets	10,499	11,226
Property and equipment, net	459	281
Restricted cash	2,150	2,150
Other noncurrent assets	735	906
Total assets	44,014	54,317
CURRENT LIABILITIES:
Accounts payable	3,678	3,442
Accrued expenses and other current liabilities	5,178	6,585
Contract liabilities	74	0
Total current liabilities	8,930	10,027
Operating lease liabilities, noncurrent	14,064	14,858
Convertible note	146	0
Other noncurrent liabilities	64	409
Total liabilities	23,204	25,294
COMMITMENTS AND CONTINGENCIES (Note 15)
STOCKHOLDERS’ EQUITY:
Preferred stock—$0.0001 par value: 1,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock—$0.0001 par value: 600,000,000 shares authorized; 8,437,733 and 6,310,090 shares issued and outstanding at June 30, 2024 and December 31, 2023	1	1
Additional paid-in capital	376,658	366,647
Accumulated other comprehensive (loss) income	(8)	10
Accumulated deficit	(355,841)	(337,635)
Total stockholders’ equity	20,810	29,023
Total liabilities and stockholders’ equity	$ 44,014	$ 54,317

Note 9 - Accumulated Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2024

Comprehensive Income (Loss) Note [Text Block]

9.	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)

The changes in accumulated other comprehensive income (loss) by component for the six months ended June 30, 2024 and 2023 are as follows (in thousands):

	*Unrealized gains (losses) on available-for-sale securities*
Balance at December 31, 2023	$	10
Other comprehensive loss, net of tax		(14	)
Balance at March 31, 2024	$	(4	)
Other comprehensive loss, net of tax		(4	)
Balance at June 30, 2024	$	(8	)

	*Unrealized gains (losses) on available-for-sale securities*			*Change in fair value due to instrument-specific credit risk*			*Total*
Balance at December 31, 2022	$	(1,254	)	$	(25	)	$	(1,279	)
Other comprehensive income (loss), net of tax		490			(21	)		469
Balance at March 31, 2023	$	(764	)	$	(46	)	$	(810	)
Other comprehensive income, net of tax		420			—			420
Balance at June 30, 2023	$	(344	)	$	(46	)	$	(390	)

Note 9 - Accumulated Other Comprehensive Income (Loss) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023
Balance at December 31, 2023	$ 21,924	$ 29,023	$ 75,966	$ 93,970
Other comprehensive loss, net of tax	(4)	(14)	420	469
Balance at March 31, 2024	20,810	21,924	65,656	75,966
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Balance at December 31, 2023	(4)	10	(764)	(1,254)
Other comprehensive loss, net of tax	(4)	(14)	420	490
Balance at March 31, 2024	(8)	(4)	(344)	(764)
A O C I Change In Fair Value Due To Instrument Specific Credit Risk [Member]
Balance at December 31, 2023			(46)	(25)
Other comprehensive loss, net of tax			0	(21)
Balance at March 31, 2024			(46)	(46)
AOCI Attributable to Parent [Member]
Balance at December 31, 2023	(4)	10	(810)	(1,279)
Other comprehensive loss, net of tax	(4)	(14)	420	469
Balance at March 31, 2024	$ (8)	$ (4)	$ (390)	$ (810)

Amount of equity (deficit) attributable to parent. Excludes temporary equity and equity attributable to noncontrolling interest.

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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 13: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 14: http://fasb.org/us-gaap/role/ref/legacyRef
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Note 10 - Net Loss Per Share - Schedule of Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Jun. 30, 2023
Net loss	$ (7,987)	$ (10,219)	$ (16,031)	$ (26,265)	$ (18,206)	$ (42,296)
Weighted average shares outstanding (basic and diluted) (in shares)	6,874,454		5,855,866		6,499,089	5,632,091
Weighted average common shares outstanding - Diluted (in shares)	6,874,454		5,855,866		6,499,089	5,632,091
Net loss per share (basic and diluted) (in dollars per share)	$ (1.16)		$ (2.74)		$ (2.8)	$ (7.51)

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

Note 13 - Restructuring - Summary of Restructuring and Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Balance as of December 31, 2023	$ 569	$ 691		$ 691
Charges	0	123	$ 45	123	$ 1,298
Cash payments	(234)	(245)
Balance as of March 31, 2024	335	569		335
Cost of Sales [Member]
Charges	0		0	105	50
Research and Development Expense [Member]
Charges	0		0	0	503
Selling and Marketing Expense [Member]
Charges	0		45	18	558
General and Administrative Expense [Member]
Charges	0		$ 0	0	$ 187
One-time Termination Benefits [Member]
Balance as of December 31, 2023	200	402		402
Charges	0	18
Cash payments	(200)	(220)
Balance as of March 31, 2024	0	200		0
Loss on Long-Term Purchase Commitment [Member]
Balance as of December 31, 2023	336	233		233
Charges	0	105
Cash payments	(34)	(2)
Balance as of March 31, 2024	302	336		302
Other Restructuring [Member]
Balance as of December 31, 2023	33	56		56
Charges	0	0
Cash payments	0	(23)
Balance as of March 31, 2024	$ 33	$ 33		$ 33

Note 6 - Leases

6 Months Ended

Jun. 30, 2024

Lessee, Operating Leases [Text Block]

6.	LEASES

The components of operating lease expenses for the three and six months ended June 30, 2024 and 2023 were as follows (in thousands):

	*Three months ended June 30,*				*Six months ended June 30,*
	*2024*		*2023*		*2024*		*2023*
Operating lease cost	$	582	$	602	$	1,171	$	1,204
Variable lease cost		85		80		169		159
Total operating lease cost	$	667	$	682	$	1,340	$	1,363

Maturities of lease liabilities are as follows (in thousands):

	*Operating leases*
Years ending - December 31:	*(unaudited)*
2024 (remaining six months)	$	1,230
2025		2,484
2026		2,559
2027		2,636
2028		2,716
Thereafter		8,400
Total lease payments		20,025
Less amount to discount to present value		(3,551	)
Present value of lease liabilities	$	16,474

Note 11 - Stock-based Compensation

6 Months Ended

Jun. 30, 2024