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Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Cash flows from operating activities:      
Net (loss) income $ (187,123) $ 40,720 $ (149,186)
Adjustments to reconcile net (loss) income to net cash used in operating activities:      
Gain on equity investments 0 (147,213) (11,825)
Changes in fair value (5,683) (53,461) 18,084
Depreciation and amortization 6,159 5,552 4,344
Stock-based compensation 49,903 47,841 39,630
Noncash investment (accretion) amortization (7,592) (7,761) 629
Loss on disposal of property and equipment 8 142 19
(Increase) decrease in assets, net of acquisition:      
Accounts receivable, net (169,700) (10,039) (23,697)
Unbilled and other receivables 3,483 (9,987) (4,253)
Reduction in the carrying amount of right of use assets - operating leases 8,942 7,766 7,287
Prepaid expenses and other assets (3,482) (8,462) (7,067)
(Decrease) increase in liabilities, net of acquisition:      
Accounts payable (6,119) 7,321 1,179
Accrued payroll, taxes, and benefits 10,347 6,881 6,477
Deferred revenue 155,484 (18,256) (1,903)
Lease liabilities - operating leases (10,053) (3,694) 1,900
Other accrued liabilities (1,942) 5,917 (1,301)
Net cash used in operating activities (157,368) (136,733) (119,683)
Cash flows from investing activities:      
Purchases of property and equipment (7,311) (13,403) (8,014)
Purchases of equity investments (3,072) (4,125) (600)
Distribution from equity investment 0 147,213 11,825
Proceeds from disposition and sale of equity investments 48,798 0 0
Acquisition, net of acquired cash 0 0 (6,427)
Purchases of marketable securities (251,339) (320,624) (271,472)
Proceeds from maturity of marketable securities 361,760 383,973 364,711
Net cash provided by investing activities 148,836 193,034 90,023
Cash flows from financing activities:      
Issuances of common stock upon stock option exercises 1,490 9,440 2,110
Payment of offering costs (177) (373) 0
Issuance of common stock in ATM offering 8,868 0 0
Principal payments on finance leases (58) (19) 0
Net cash provided by financing activities 10,123 9,048 2,110
Net increase (decrease) in cash and cash equivalents and restricted cash 1,591 65,349 (27,550)
Cash and cash equivalents and restricted cash, beginning of year 161,066 95,717 123,267
Cash and cash equivalents and restricted cash, end of year 162,657 161,066 95,717
Supplemental disclosure of cash flow and noncash information      
Cash paid for income taxes 1,080 2,828 787
Supplemental disclosure of non-cash investing and financing activities      
Purchases of property and equipment in accounts payable 162 192 169
Purchases of property and equipment in accrued liabilities 157 457 293
Acquisition of right of use assets - operating leases, contingency resolution 2,848 514 1,513
Acquisition of right of use assets - operating leases 0 15,085 34,763
Acquisition of lease liabilities - operating leases 0 15,085 34,430
Acquisition of right of use assets in exchange for lease liabilities - finance leases $ 0 $ 279 $ 0