Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (48,546,000)	$ 9,380,000
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	496,000	344,000
Stock-based compensation	8,572,000	8,243,000
Amortization of right-of-use asset	1,596,000	1,360,000
Amortization, other	347,000	1,721,000
Accretion from short-term investments	(1,157,000)	(80,000)
Gain on change in fair value of earnout liability	(827,000)	(74,078,000)
Gain on change in fair value of warrant liability	(397,000)	(2,875,000)
Impairment loss	387,000	0
Loss from extinguishment of debt	1,123,000	958,000
Foreign currency transaction loss, net	757,000	2,168,000
Other	0	181,000
Changes in operating assets and liabilities:
Accounts receivable, net	(2,324,000)	(801,000)
Inventories	575,000	(448,000)
Prepaid expenses and other current assets	4,032,000	(1,920,000)
Other long-term assets	202,000	(296,000)
Accounts payable	(1,073,000)	(653,000)
Accrued expenses and other current liabilities	1,800,000	99,000
Operating lease liabilities	(1,086,000)	(1,611,000)
Other long-term liabilities	0	311,000
Net cash used in operating activities	(35,523,000)	(57,997,000)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(1,292,000)	(760,000)
Proceeds from sale of property and equipment	36,000	0
Purchases of short-term investments	(37,806,000)	(32,368,000)
Proceeds from sales of short-term investments	0	8,303,000
Proceeds from maturities of short-term investments	36,700,000	23,274,000
Net cash used in investing activities	(2,362,000)	(1,551,000)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from Business Combination and private offering	0	76,107,000
Payments of Business Combination and private offering transaction costs	0	(29,031,000)
Proceeds from issuance of Trinity debt and warrants, net of debt discount	0	9,724,000
Repayment of Trinity debt	0	(10,400,000)
Repayment of secured term loan with Koito	(45,220,000)	0
Proceeds from issuance of secured term loan with Koito	0	39,442,000
Proceeds from issuance of common stock options	31,000	1,008,000
Payment of employee taxes related to vested restricted stock units	(63,000)	0
Proceeds from convertible preferred stock, net of issuance costs	99,884,000	0
Proceeds from issuance of common stock	0	1,700,000
Net cash provided by financing activities	54,632,000	88,550,000
Effect of exchange rate changes on cash	424,000	1,862,000
Net increase in cash, cash equivalents and restricted cash	17,171,000	30,864,000
Cash, cash equivalents and restricted cash, beginning of period	34,518,000	3,654,000
Cash, cash equivalents and restricted cash, end of period	51,689,000	34,518,000
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest	63,000	983,000
Cash paid for income taxes	0	24,000
Transaction costs, accrued but not paid	0	307,000
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING INFORMATION
Purchases of property and equipment in accounts payable	0	85,000
Vesting of early exercised stock options	0	101,000
Right-of-use assets obtained in exchange for new operating lease liabilities	$ 11,190,000	$ 1,827,000