Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities:
Net loss	$ (39,592)	$ (27,338)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	3,955	1,791
Non-cash research and development arrangements	130	130
Stock-based compensation	22,061	10,268
(Gain) loss on change in fair value of warrant liabilities	(8,627)	3,610
Amortization of premiums and accretion of discounts on available-for-sale securities	(2,302)	(1,915)
Other, net	809	345
Changes in operating assets and liabilities:
Accounts receivable	1,897	2,044
Prepaid expenses and other current assets	(4,656)	(939)
Accounts payable	(521)	728
Accrued expenses	(554)	920
Unearned revenue	4,389	(3,271)
Other assets and liabilities	2,546	(188)
Net cash provided by (used in) operating activities	(20,465)	(13,815)
Cash flows from investing activities:
Purchases of property and equipment	(3,140)	(1,185)
Capitalized software development costs	(1,400)	(843)
Intangible asset acquisition costs	(357)	(318)
Purchases of available-for-sale securities	(66,619)	(64,430)
Maturities and sales of available-for-sale securities	115,045	88,091
Net cash provided by (used in) investing activities	43,529	21,315
Cash flows from financing activities:
Proceeds from stock options exercised	486	52
Tax withholding receipts (payments) related to vested and released RSUs, net	873	(18)
Net cash provided by (used in) financing activities	1,359	34
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	4	0
Net change in cash, cash equivalents and restricted cash	24,427	7,534
Cash, cash equivalents and restricted cash at the beginning of the period	38,081	46,367
Cash, cash equivalents and restricted cash at the end of the period	62,508	53,901
Supplemental disclosures of non-cash investing and financing transactions
Property and equipment purchases in accounts payable and accrued expenses	3,043	153
Intangible asset purchases in accounts payable and accrued expenses	391	216
Operating lease right-of-use assets subject to lease liability	5,021	2,239
Bonus settled in restricted stock units	11,443	0
Net share settled stock option exercises	$ 1,016	$ 0