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	$ (65,756)	$ (56,099)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,358	1,105
Non-cash interest expense	164	121
Equity-based compensation expense	6,609	2,887
Loss on disposal of property and equipment	1	19
Change in fair value of warrant and derivative liabilities		199
Changes in operating assets and liabilities:
Prepaid and other assets	1,283	(3,597)
Operating lease right-of-use asset	288	244
Accounts payable	(972)	(1,626)
Accrued expenses and other liabilities	116	(6,459)
Operating lease liability	(591)	(383)
Net cash used in operating activities	(57,500)	(63,589)
Cash flows from investing activities:
Purchases of property and equipment	(1,358)	(722)
Net cash used in investing activities	(1,358)	(722)
Cash flows from financing activities:
Repayments of debt principal		(1,000)
Proceeds from debt issuance, net of issuance costs		975
Payments of finance lease	(64)	(63)
Proceeds from issuance of convertible preferred stock, net of issuance costs		144,886
Proceeds from exercise of stock options	16	44
Net cash (used in) provided by financing activities	(48)	144,842
(Decrease) increase in cash, cash equivalents and restricted cash	(58,906)	80,531
Cash, cash equivalents and restricted cash, beginning of period	199,606	20,789
Cash, cash equivalents and restricted cash, end of period	140,700	101,320
Supplemental cash flow disclosure:
Cash paid for interest	380	371
Supplemental disclosure of non-cash activities:
Capital expenditures included in accounts payable or accrued expenses	$ 371	47
Deferred offering costs included in accounts payable or accrued expenses		879
Recognition of derivative liability in connection with long-term debt facility		$ 250