Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net loss	$ (26,303)	$ (14,779)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	552	385
Change in fair value of warrant liability	(16)	(1)
Change in fair value of derivative liability		52
Stock-based compensation expense	2,881	456
Accretion on marketable securities	(143)
Other	(4)	(1)
Changes in operating assets and liabilities:
Prepaid expenses and other assets	(892)	396
Accounts payable	(1,515)	1,612
Accrued expenses and other liabilities	(388)	246
Net cash used in operating activities	(25,828)	(11,634)
Cash flows from investing activities:
Purchases of property and equipment	(673)	(733)
Purchase of marketable securities	(71,266)
Maturities of marketable securities	3,000
Net cash used in investing activities	(68,939)	(733)
Cash flows from financing activities:
Proceeds from exercise of stock options	326	285
Payment made for deferred offering costs		(280)
Net cash provided by financing activities	326	87,233
Net (decrease) increase in cash, cash equivalents and restricted cash	(94,441)	74,866
Cash, cash equivalents and restricted cash at beginning of period	149,211	17,487
Cash, cash equivalents and restricted cash at end of period	54,770	92,353
Supplemental disclosure of cash flow information:
Purchases of property and equipment in accounts payable and accrued expenses and other liabilities	$ 426	152
Initial measurement of right-of-use assets and lease liabilities for operating lease		536
Remeasurement of right-of-use assets and lease liabilities for lease modification		390
Right-of-use assets obtained in exchange for operating lease liabilities		516
Deferred offering costs in accounts payable		55
Series D Convertible Preferred Stock
Cash flows from financing activities:
Proceeds from issuance of convertible preferred stock, net of issuance costs		6,982
Series E Convertible Preferred Stock
Cash flows from financing activities:
Proceeds from issuance of convertible preferred stock, net of issuance costs		$ 80,246