Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (98,714)	$ (65,011)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,422	1,014
Noncash lease expense relating to operating lease right-of-use assets	1,338	0
Noncash common stock purchase agreement costs	0	1,583
Inventory write-downs, net of scrapped inventory	675	1,203
Change in fair value of convertible note, embedded derivative liability, and warrant liabilities	14	(223)
Noncash gain on PPP loan forgiveness	0	(2,297)
Stock-based compensation	23,959	10,018
Convertible note issuance costs	474	0
Amortization of debt issuance costs	0	725
Amortization of debt discount	0	752
Realized loss on redemption of marketable securities	77	0
Amortization of premiums on marketable securities, net of change in accrued interest	1,086	310
Other	0	287
Changes in operating assets and liabilities:
Accounts receivable, net	3,605	(4,066)
Inventories, current and noncurrent, net	(2,634)	(2,633)
Prepaid and other current assets	(1,130)	(3,655)
Other noncurrent assets	527	(1,483)
Accounts payable	839	557
Accrued expenses and other current liabilities	85	5,496
Operating lease liabilities	(1,341)	0
Deferred rent	0	(538)
Contract liabilities	(1,931)	2,258
Net cash used in operating activities	(71,649)	(55,703)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(4,200)	(1,021)
Proceeds from redemptions and maturities of marketable securities	96,592	0
Purchase of available-for-sale securities	(23,929)	(150,525)
Net cash provided by (used in) investing activities	68,463	(151,546)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	1,174	150
Proceeds from Business Combination and PIPE financing	0	256,811
Transaction costs related to Business Combination and PIPE financing	0	(52,372)
Proceeds from the issuance of convertible notes	9,850	8,045
Payments for convertible note redemptions	(874)	0
Payment of 2022 convertible note issuance costs	(324)	0
Proceeds from bank loan	0	10,000
Principal payments on bank loans	0	(13,333)
Payment of debt issuance costs	0	(717)
Taxes paid related to the net share settlement of equity awards	(4,621)	0
Repurchase of stock options	0	(1,500)
Proceeds from issuance of common stock under the Common Stock Purchase Agreement	2,891	0
Payment of transaction costs related to the Common Stock Purchase Agreement	(29)	0
Net cash provided by financing activities	8,067	207,084
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	4,881	(165)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—Beginning of period	16,333	16,498
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—Ending	21,214	16,333
SUPPLEMENTAL CASH FLOW INFORMATION:
Cash paid for interest	133	358
Cash paid for income taxes	20	0
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Purchases of property and equipment included in accounts payable and accrued liabilities	28	270
Operating lease right-of-use assets obtained in exchange for lease obligations	556	0
Conversion of Series A and Series B preferred stock into Class A common stock	0	62,639
Conversion of convertible notes and accrued interest into Class A common stock	600	39,095
Taxes related to net share settlement of equity awards included in accrued liabilities	4	835
Assumption of the private placement warrant liability in connection with Business Combination	0	268
Transaction costs paid in 2020, previously recorded to other non-current assets and reclassified to additional paid-in capital in 2021	0	289
Cumulative Effect, Period of Adoption, Adjustment
SUPPLEMENTAL DISCLOSURE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Operating lease right-of-use assets obtained in exchange for lease obligations	$ 16,284	$ 0