Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net loss	$ (21,293)	$ (20,402)
Adjustments to reconcile net loss to net cash used in operating activities:
Issuance of common stock		3,787
Stock-based compensation	3,577	1,566
Depreciation and amortization	46	30
Non-cash lease expense	1	10
Change in fair value of warrant liability	(6,324)	293
Net amortization on marketable securities	1,771	628
Net loss (gain) on marketable securities	214	(45)
Change in operating assets and liabilities (net of assets and liabilities acquired in the Merger)
Prepaid expenses and other current assets	(4,199)	(3,913)
Interest receivable on marketable securities	546	77
Accounts payable	5,748	3,940
Accrued expenses	(5,016)	(701)
Net cash used in operating activities	(24,929)	(14,730)
Cash flow from investing activities:
Purchases of marketable securities	(131,669)	(24,513)
Proceeds from sale of marketable securities	126,125	23,542
Purchases of property and equipment	(7)	(114)
Net cash (used in) provided by investing activities	(5,551)	(1,085)
Cash flow from financing activities:
Proceeds from the Merger, net of offering costs paid		624,964
Proceeds from exercises of options	314
Advance received from broker	3,950
Net cash provided by financing activities	4,264	624,964
Net (decrease) increase in cash and cash equivalents	(26,216)	609,149
Cash and cash equivalents, beginning of the period	132,423	29,755
Cash and cash equivalents, end of the period	$ 106,207	638,904
Supplemental Cash Flow Elements [Abstract]
Right-of-use assets recognized		3,917
Operating Lease Liabilities Recognized		4,074
Reclassification of deferred rent		(157)
Non-cash financing activity:
Issuance of common stock for in-process research and development		$ 3,787