Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net loss	$ (129,560)	$ (105,999)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization	3,684	1,628
Non-cash lease expense	2,202	2,037
Stock-based compensation	23,196	23,399
Non-cash interest expense	4,635
Other	(697)	813
Changes in assets and liabilities:
Accounts receivable	(4,949)	(3,645)
Unbilled accounts receivable	9,899	8,035
Inventory	78	(9,828)
Prepaid expenses and other current assets	5,741	(19,588)
Other assets	(417)	(13,741)
Accounts payable	7,806	9,516
Accrued expenses	(23,686)	(17,049)
Other long-term liabilities	(7,238)	6,826
Deferred revenue	(11,099)	(13,251)
Operating lease liabilities	(2,556)	(1,879)
Net cash used in operating activities	(122,961)	(132,726)
Cash flows from investing activities
Purchases of property and equipment	(2,584)	(1,153)
Purchases of investments	(132,875)	(39,937)
Maturities of investments	308,250	0
Net cash provided by (used in) investing activities	172,791	(41,090)
Cash flows from financing activities
Net proceeds from stock option exercises and employee stock purchase plan		1,264
Net cash provided by financing activities		1,264
Net increase (decrease) in cash, cash equivalents, and restricted cash	49,830	(172,552)
Cash, cash equivalents and restricted cash at beginning of period	124,904	215,119
Effect of exchange rate changes on cash, cash equivalents and restricted cash	197	(197)
Cash, cash equivalents and restricted cash at end of period	174,931	42,370
Supplemental cash flow information
Cash paid for interest	7,084
Property and equipment purchases unpaid at period end		1,036
Cash paid for taxes, net	$ 311	$ 169