Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows from operating activities
Net income (loss)	$ (30,881)	$ 4,618
Adjustments to reconcile net loss to net cash used in operating activities:
Noncash lease expense	561	645
Depreciation and amortization expense	1,254	352
Stock-based compensation expense	4,765	4,350
Loss on disposal of property and equipment	0	18
Amortization of deferred debt issuance costs	17	18
Changes in operating assets and liabilities:
Accounts receivable - related party	0	185
Prepaid expenses and other current assets	214	1,077
Other non-current assets	84	117
Accounts payable	(2,333)	(612)
Contract liabilities — related party		(4,805)
Operating lease liabilities	2,474	(361)
Accrued and other current and non-current liabilities	(249)	(1,497)
Net cash used in operating activities	(24,094)	4,105
Cash flows from investing activities
Purchases of property and equipment	(1,915)	(2,632)
Net cash provided by (used in) investing activities	(1,915)	(2,632)
Cash flows from financing activities
Proceeds from exercise of stock options	3	94
Taxes withheld and paid related to net share settlement of equity awards	(10)	(1,106)
Deferred issuance costs	0	(122)
Net cash provided by (used in) financing activities	(7)	(1,134)
Net change in cash, cash equivalents and restricted cash	(26,016)	339
Cash, cash equivalents and restricted cash, at the beginning of period	257,656	277,694
Cash, cash equivalents and restricted cash, at the end of period	231,640	278,033
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents	231,640	277,883
Restricted cash	0	150
Cash, cash equivalents and restricted cash, at the end of period	231,640	278,033
Supplemental disclosures of noncash investing and financing activities
Purchases of property and equipment included in accounts payable	$ 1,081	$ 1,481