CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (45,966)	$ (39,848)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	885	723
Non-cash interest expense	106	78
Equity-based compensation expense	4,738	1,796
Loss on disposal of property and equipment		19
Change in fair value of warrant and derivative liabilities		44
Changes in operating assets and liabilities:
Prepaid and other assets	857	(1,398)
Operating lease right-of-use asset	188	159
Accounts payable	(1,217)	1,921
Accrued expenses and other liabilities	3,204	(6,159)
Operating lease liability	(386)	(205)
Net cash used in operating activities	(37,591)	(42,870)
Cash flows from investing activities:
Purchases of property and equipment	(1,025)	(608)
Net cash used in investing activities	(1,025)	(608)
Cash flows from financing activities:
Repayments of debt principal		(333)
Payments of finance lease	(42)	(42)
Proceeds from issuance of convertible preferred stock, net of issuance costs		144,886
Proceeds from exercise of stock options	16	30
Net cash (used in) provided by financing activities	(26)	144,541
(Decrease) increase in cash, cash equivalents and restricted cash	(38,642)	101,063
Cash, cash equivalents and restricted cash, beginning of period	199,606	20,789
Cash, cash equivalents and restricted cash, end of period	160,964	121,852
Supplemental cash flow disclosure:
Cash paid for interest	240	253
Supplemental disclosure of non-cash activities:
Capital expenditures included in accounts payable or accrued expenses	$ 154	2
Deferred offering costs included in accounts payable or accrued expenses		$ 1,538