CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
OPERATING CASH FLOW ACTIVITIES:
Net loss			$ (110,949)	$ (80,806)
Reconciliation of net loss to net cash used in operating activities
Depreciation	$ 85	$ 76	246	221
Accretion of debt discount and amortization of financing costs	217		538
Change in fair value of derivative liabilities			(63)
Stock-based compensation expense			12,790	17,219
PIK interest			403
Loss on disposal of equipment				46
Changes in operating assets and liabilities:
Inventory			(1,408)
Prepaid expenses, other current assets and other assets			(4,934)	(1,739)
Operating lease right-of-use assets			202	199
Accounts payable, accrued expenses, and other liabilities			3,795	2,807
Accrued interest			2,896
Operating lease liabilities			(218)	(168)
Net cash used in operating activities			(96,702)	(62,221)
INVESTING CASH FLOW ACTIVITIES:
Purchases of equipment and leasehold improvements			(139)	(433)
Net cash used in investing activities			(139)	(433)
FINANCING CASH FLOW ACTIVITIES:
Proceeds from long-term debt			98,600
Debt issuance costs			(2,646)
Proceeds from issuance of common stock, net of issuance costs				100,993
Exercise of stock options			233	1,454
Net cash provided by financing activities			96,187	102,447
Net (decrease) increase in cash and cash equivalents			(654)	39,793
Cash and cash equivalents, beginning of the period			232,968	213,119	$ 213,119
Cash and cash equivalents, end of the period	$ 232,314	$ 252,912	232,314	$ 252,912	$ 232,968
Supplemental cash flow information:
Issuance of stock purchase warrants			$ 3,245