Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net income (loss)	$ 7,346	$ (53,571)
Adjustments to reconcile net loss to net cash from operating activities:
Depreciation and amortization	148	115
Amortization on right-of-use asset	121	72
Stock-based compensation	918	627
Amortization of debt issuance costs	0	5
Accretion of debt discount	0	14
Change in fair value of derivatives	834	391
Change in fair value of common stock warrants liability	1,774	0
Change in fair value of preferred stock warrants liability	0	48,109
Change in fair value of earnout liability	(15,227)	0
Change in fair value of incremental acquisition fee accrual	(45)	0
Payments on operating lease liabilities	(62)	(72)
Changes in operating assets and liabilities:
Other receivables	(179)	20
Prepaid expenses and other current assets	1,215	(2)
Other long-term assets	(32)	0
Accounts payable	637	31
Accrued expenses	1,495	901
Other liabilities, current	(290)	0
Related party payable	57	0
Net cash used in operating activities	(1,290)	(3,360)
Cash flows from investing activities
Purchases of property, plant, and equipment, net of grants	(10,380)	(741)
Capitalized interest on plant construction	(20)	(52)
Purchases of marketable securities	(1,255,027)	0
Sales of marketable securities	1,240,788	0
Maturities of marketable securities	37,732	0
Net cash provided by (used in) investing activities	13,093	(793)
Cash flows from financing activities
Proceeds from stockholders' notes payable, net of debt issuance costs	0	11,687
Proceeds from Canadian Government Research and Development Program	0	74
Issuance of common stock	34	55
Net cash provided by financing activities	34	11,816
Effects of foreign exchange rate changes on the balance of cash and cash equivalents, and restricted cash held in foreign currencies	(533)	(100)
Net increase (decrease) in cash and cash equivalents, and restricted cash	11,304	7,563
Cash and cash equivalents, and restricted cash, beginning of the period	47,127	1,874
Cash and cash equivalents, and restricted cash, end of the period	58,431	9,437
Non-cash investing and financing activities
Operating lease right-of-use asset obtained in exchange for lease obligations	1,045	1,827
Stock-based compensation capitalized into property, plant, and equipment	276	0
Debt discount related to derivative liability	$ 0	$ 2,196