Condensed Consolidated Statements of Cash Flows $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)
Cash flows from operating activities:
Net loss	$ (67,280)	$ (93,775)	$ (151,767)	$ (195,787)
Stock-based compensation			9,601	16,480
Depreciation and amortization	4,171	3,256	8,394	6,955
Amortization of debt issuance costs			1,143	1,109
Accretion of marketable securities purchased at a discount			(4,007)	(9,975)
Other non-cash items			(22)	694
Change in operating assets and liabilities:
Other current and non-current assets			(550)	6,272
Accounts payable			3,965	5,017
Customer deposits			(3,622)	(10,115)
Other current and non-current liabilities			5,501	(13,011)
Net cash used in operating activities			(131,364)	(192,361)
Cash flows from investing activities:
Capital expenditures			(104,408)	(47,487)
Purchases of marketable securities			(220,925)	(348,833)
Proceeds from maturities and calls of marketable securities			355,959	479,398
Other investing activities			8	598
Net cash provided by investing activities			30,634	83,676
Cash flows from financing activities:
Payments of finance lease obligations			(98)	(108)
Proceeds from issuance of common stock			86,330	71,580
Withholding taxes paid on behalf of employees on net settled stock-based awards			(108)	(870)
Transaction costs related to issuance of common stock			(2,552)	(681)
Net cash provided by financing activities			83,572	69,921
Net decrease in cash, cash equivalents and restricted cash			(17,158)	(38,764)
Cash, cash equivalents and restricted cash at beginning of period			210,885	253,592
Cash, cash equivalents and restricted cash at end of period	193,727	214,828	193,727	214,828
Cash and cash equivalents	163,547	182,310	163,547	182,310
Restricted cash	30,180	32,518	30,180	32,518
Cash, cash equivalents and restricted cash	$ 193,727	$ 214,828	$ 193,727	$ 214,828