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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Cash flows from operating activities:    
Net (loss) income $ (54,724) $ 129,136
Adjustments to reconcile net (loss) income to net cash used in operating activities:    
Gain on equity investments 0 (147,322)
Fair value adjustments (8,137) (35,737)
Depreciation and amortization 1,436 1,760
Stock-based compensation 12,218 10,880
Noncash investment accretion (2,683) (964)
Decrease (increase) in assets:    
Accounts receivable, net 46,153 9,262
Unbilled and other receivables (2,657) (336)
Reduction in the carrying amount of right of use assets - operating leases 2,152 0
Prepaid expenses and other assets (2,559) (5,750)
(Decrease) increase in liabilities:    
Accounts payable (7,150) 2,468
Income taxes payable 0 25,963
Accrued payroll, taxes, and benefits (12,214) (11,730)
Deferred revenue (7,761) (11,603)
Lease liabilities - operating leases (1,967) (623)
Other accrued liabilities (1,383) 3,502
Net cash used in operating activities (39,276) (31,094)
Cash flows from investing activities:    
Purchases of property and equipment (4,095) (3,580)
Purchases of equity investments 0 (4,125)
Distribution from equity investment 0 111,329
Purchases of marketable securities (37,126) (58,823)
Proceeds from maturity of marketable securities 46,300 127,401
Net cash provided by investing activities 5,079 172,202
Cash flows from financing activities:    
Issuances of common stock upon stock option exercises 392 867
Principal payments on finance leases (14) 0
Issuance of common stock upon ATM offering, net 7,627 0
Net cash provided by financing activities 8,005 867
Net (decrease) increase in cash and cash equivalents and restricted cash (26,192) 141,975
Cash and cash equivalents and restricted cash, beginning of period 161,066 95,717
Cash and cash equivalents and restricted cash, end of period 134,874 237,692
Supplemental disclosure of cash flow and noncash information    
Cash paid for income taxes 180 86
Supplemental disclosure of non-cash investing and financing activities    
Purchases of property and equipment in accounts payable 501 218
Purchases of property and equipment in accrued liabilities 282 86
Acquisition of right of use assets - operating leases, contingency resolution $ 2,848 $ 1,820