Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities
Net (loss) income	$ (33,050)	$ 37,379
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization	382	696
Amortization of premiums and discounts on marketable securities	(79)	0
Non-cash lease expense	842	591
Gain on disposal of property and equipment	0	(147)
Stock-based compensation expense	6,059	6,317
Non-cash interest expense	533	579
Warrant liabilities revaluation	(2,262)	(13,868)
Changes in operating assets and liabilities:
Accounts receivable	1,211	(14,080)
Unbilled receivable	2,107	0
Prepaid expenses, deposits and other assets	815	(374)
Accounts payable	(49)	300
Income taxes payable	0	(280)
Deferred revenue	8,504	(42,213)
Accrued expenses and other liabilities	(3,673)	965
Net cash used in operating activities	(18,660)	(24,135)
Cash flows from investing activities
Proceeds from maturities of marketable securities	28,254	10,000
Purchases of property and equipment	(142)	(554)
Net cash provided by investing activities	28,112	9,446
Cash flows from financing activities
Repayments of principal on outstanding debt	(2,586)	0
Debt amendment fee included in debt discount	0	(110)
Net proceeds from issuance of common stock and common warrants	0	36,890
Proceeds from exercise of stock options	0	21
Proceeds from issuance of common stock under Employee Stock Purchase Plan	149	127
Net cash (used in) provided by financing activities	(2,437)	38,603
Effect of exchange rate changes on cash	(49)	86
Net change in cash, cash equivalents, and restricted cash	6,966	24,000
Cash, cash equivalents, and restricted cash at beginning of period	108,038	115,436
Cash, cash equivalents, and restricted cash at end of period	115,004	139,436
Supplemental cash flow information
Cash paid for interest	1,242	1,014
Noncash investing and financing activities
Issuance of common stock, license agreement in stock-based compensation expense	0	1,000
Stock-based compensation expense in accrued liabilities	1,500	0
Purchase of property and equipment not yet paid	48	320
Equity offering costs in accrued liabilities	0	31
At-The-Market Offering
Cash flows from financing activities
Net proceeds from issuance of common stock- at-the-market offering	$ 0	$ 1,675