CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net loss	$ (147,305)	$ (101,878)	$ (25,570)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	3,265	1,147	798
Impairment of inventories	1,664	0	0
Loss on write down of fixed assets	0	52	0
Change in fair value of warrant liability	(970)	(1,954)	0
Stock-based compensation	24,247	22,237	3,806
Amortization of right-of-use assets	2,882	1,901	0
Realized loss on available-for-sale securities	29	0	0
Amortization of premium on available-for-sale securities	389	1,498	0
Accounts receivable	(546)	(2,200)	228
Inventories	(2,552)	(844)	(865)
Other current assets	3,634	(7,285)	(3,513)
Other noncurrent assets	(3)	(795)	(5)
Accounts payable	1,287	2,667	1,360
Accrued liabilities	4,953	3,202	2,263
Accrued employee costs	2,525	1,474	256
Lease liability	(2,871)	(1,785)	0
Other current liabilities	(539)	458	5
Other noncurrent liabilities	0	0	6
Net cash used in operating activities	(109,911)	(82,105)	(21,231)
Cash flows from investing activities:
Purchase of property, plant, and equipment	(7,439)	(3,850)	(855)
Purchase of available-for-sale securities	(210,197)	(571,925)	0
Proceeds from sale of available-for-sale securities	0	20,123	0
Proceeds from maturities of available-for-sale securities	328,526	171,580	0
Purchase of intangible assets	0	(4,500)	0
Net cash provided by (used in) investing activities	110,890	(388,572)	(855)
Cash flows from financing activities:
Proceeds from business combination and private offering	0	560,777	0
Transaction costs related to business combination and private offering	0	(47,487)	0
Payments of taxes withheld on net settled vesting of restricted stock units	(720)	(1,338)	0
Proceeds from exercise of stock options	350	911	73
Proceeds from exercise of warrants	1	0
Net cash provided by (used in) financing activities	(369)	512,863	73
Net increase (decrease) in cash and cash equivalents	610	42,186	(22,013)
Beginning cash and cash equivalents	66,810	24,624	46,637
Ending cash and cash equivalents	67,420	66,810	24,624
Supplemental disclosures of cash flow information:
Cash paid for interest	0	0	0
Cash paid for income taxes	0	0	0
Supplemental disclosure of noncash investing and financing activities:
Unpaid property, plant and equipment purchases	79	796	2
Private placement of warrants acquired as part of merger	0	3,014	0
Right-of-use asset obtained in exchange for lease liability	0	10,515	0
Non-cash lease adoption	$ 0	$ 1,671	$ 0