CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (68,128)	$ (43,531)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,429	469
Change in fair value of warrant liability	(787)	(1,240)
Stock-based compensation	12,218	8,522
Impairment of inventories	842
Amortization of right-of-use assets	1,422	582
Realized loss on available-for-sale securities	29
Amortization of premium on available-for-sale securities	636	416
Changes in operating assets and liabilities:
Accounts receivable	1,988	(1,397)
Inventories	(296)	(528)
Other current assets	(3,230)	(5,028)
Other noncurrent assets	(1)	(296)
Accounts payable	(359)	1,905
Accrued liabilities	(1,788)	6,332
Accrued employee costs	(30)	182
Lease liability	(1,404)	(414)
Other current liabilities	(512)	34
Net cash used in operating activities	(57,971)	(33,992)
Cash flows from investing activities:
Purchase of property, plant and equipment	(3,872)	(1,202)
Purchase of available-for-sale securities	(139,714)	(366,204)
Proceeds from maturities of available-for-sale securities	217,968	20,123
Net cash provided by (used in) investing activities	74,382	(347,283)
Cash flows from financing activities:
Proceeds from business combination and private offering		560,777
Transaction costs related to business combination and private offering		(47,487)
Payments of taxes withheld on net settled vesting of restricted stock units	(418)
Proceeds from exercise of warrants	1
Proceeds from exercise of stock options	244	360
Net cash provided by (used in) financing activities	(173)	513,650
Net increase (decrease) in cash and cash equivalents	16,238	132,375
Beginning cash and cash equivalents	66,810	24,624
Ending cash and cash equivalents	83,048	156,999
Supplemental disclosures of cash flow information:
Cash paid for interest	0	0
Cash paid for income taxes	0	0
Supplemental disclosures of non-cash investing and financing activities:
Changes in purchases of property and equipment recorded in accounts payable and accrued liabilities	491	164
Private placement of warrants acquired as part of merger		3,014
Right-of-use assets obtained in exchange for lease liability		4,692
Non-cash lease adoption		$ 1,665