Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities:
Net loss	$ (77,153)	$ (71,056)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	8,260	4,120
Non-cash research and development arrangements	260	260
Stock-based compensation	43,040	21,572
(Gain) loss on change in fair value of warrant liabilities	(15,266)	19,147
Amortization of premiums and accretion of discounts on available-for-sale securities	(4,787)	(4,593)
Other, net	1,896	736
Changes in operating assets and liabilities:
Accounts receivable	3,558	2,074
Prepaid expenses and other current assets	(8,341)	(2,928)
Accounts payable	(165)	479
Accrued expenses	(2,116)	2,267
Unearned revenue	1,262	(2,005)
Other assets and liabilities	2,508	26
Net cash provided by (used in) operating activities	(47,044)	(29,901)
Cash flows from investing activities:
Purchases of property and equipment	(10,629)	(2,411)
Capitalized software development costs	(2,129)	(1,950)
Intangible asset acquisition costs	(892)	(628)
Purchases of available-for-sale securities	(146,098)	(185,377)
Maturities of available-for-sale securities	211,572	189,446
Net cash provided by (used in) investing activities	51,824	(920)
Cash flows from financing activities:
Proceeds from stock options exercised	1,185	541
Other financing, net	141	(1)
Net cash provided by (used in) financing activities	1,326	540
Effect of foreign exchange rate changes on cash, cash equivalents and restricted cash	4	0
Net change in cash, cash equivalents and restricted cash	6,110	(30,281)
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	44,191	16,086
Supplemental disclosures of non-cash investing and financing transactions
Property and equipment purchases in accounts payable and accrued expenses	1,814	1,527
Intangible asset purchases in accounts payable and accrued expenses	234	243
Operating lease right-of-use assets subject to lease liability	5,962	2,239
Bonus settled in restricted stock units	11,443	2,500
Net share settled stock option exercises	$ 1,016	$ 0