Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (104,679)	$ (58,744)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	674	378
Loss on disposal of fixed asset	12	46
Stock-based compensation expense	18,682	11,722
Non-cash lease expense	941	520
Changes in operating assets and liabilities:
Accounts receivable	18,000	(18,000)
Prepaid expenses and other current assets	(3,321)	(1,548)
Other assets	(1,574)	0
Accounts payable	(408)	1,485
Right-of-use assets and operating lease liabilities	(3,711)	(597)
Accrued expenses and other current liabilities	5,322	2,652
Other liabilities	0	(62)
Net cash used in operating activities	(70,062)	(62,148)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(1,241)	(1,024)
Net cash used in investing activities	(1,241)	(1,024)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	818	379
Net cash provided by financing activities	120,309	28,550
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	49,006	(34,622)
Cash, cash equivalents and restricted cash at beginning of year	231,369	265,991
Cash, cash equivalents and restricted cash at end of year	280,375	231,369
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Property and equipment purchases still in accounts payable	75	11
Issuance cost still in accrued and accounts payable	63	75
Right-of-use assets obtained in exchange for operating lease obligation	15,423	0
Reconciliation of cash, cash equivalents and restricted cash
Cash and cash equivalents	279,048	230,042
Restricted cash	1,327	1,327
Total cash, cash equivalents and restricted cash	280,375	231,369
At The Market Offering
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock, net of offering cost	119,578	28,171
Payment of issuance costs	$ (87)	$ 0