CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash flows from operating activities
Net loss	$ (59,412)	$ (43,784)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	307	151
Non-cash interest expense	58	59
Non-cash lease expense	463	200
Stock-based compensation expense	7,873	4,275
Income tax benefit	0	(52)
Gain on forgiveness of Paycheck Protection Program note	0	(426)
Impairment on note receivable	0	761
Other	(673)	0
Changes in assets and liabilities:
Prepaid expenses and other assets	1,888	845
Accounts payable and accrued expenses	6,592	2,925
Lease obligations	(261)	(191)
Other assets	0	100
Net cash used in operating activities	(43,165)	(35,137)
Cash flows from investing activities
Purchases of property and equipment	(2,433)	(747)
Asset acquisition	0	(127)
Issuance of note receivable	0	(750)
Repayment of note receivable	761	0
Net cash used in investing activities	(1,672)	(1,624)
Cash flows from financing activities
Proceeds from issuance of common stock	51,198	128,606
Tax payments for net share settlement of restricted stock units	(57)	0
Payment of equity issuance costs	(298)	(8,525)
Proceeds from issuance of debt	500	0
Payment of debt issuance costs	(43)	0
Financing lease principal payments	0	(10)
Net cash provided by financing activities	51,300	120,071
Effect of changes in exchange rate on cash, cash equivalents, and restricted cash	30	0
Net increase in cash, cash equivalents, and restricted cash	6,493	83,310
Cash, cash equivalents, and restricted cash at beginning of period	95,109	24,190
Cash, cash equivalents, and restricted cash at end of period	101,602	107,500
Supplemental disclosure of non-cash investing and financing transactions:
Series B Convertible Preferred Stock issuance	0	4,988
Exercise of warrants	0	603
Forgiveness of Paycheck Protection Program note	0	426
Equity issuance costs	2	0
Purchases of property and equipment	1,231	9
Right-of-use asset related to operating leases	2,916	926
Debt issuance costs	$ 19	$ 0