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	$ (35,408)	$ (59,011)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation	8,045	34,267
Amortization of intangible assets	1,600	1,039
Non-cash lease expense	17
Changes in operating assets and liabilities:
Prepaid and other current assets	541	56
Accounts payable	(3,429)	(51)
Accrued expenses	792	2,579
Contribution payable	(151)	(88)
Net cash used in operating activities	(27,993)	(21,209)
Cash flows from investing activities
Acquisition, net of cash acquired		(297)
Other investing activities		(86)
Net cash used in financing activities		(383)
Cash flows from financing activities
Proceeds from issuance of share capital, net of issuance costs		81,928
Proceeds from exercise of warrants	708	10,676
Proceeds from exercise of options	123	5,273
Withholding taxes paid on vested restricted stock units	(407)
Net cash provided by financing activities	424	97,877
Effect of exchange rate changes on cash	(229)	719
Net (decrease) increase in cash	(27,798)	77,004
Cash, beginning of period	133,539	80,094
Cash, end of period	105,741	$ 157,098
Supplemental Noncash Disclosures
Right-of-use assets obtained in exchange of operating lease liabilities	$ 194