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Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Cash flows from operating activities    
Net income $ 18,987 $ 16,555
Adjustments to reconcile net income to net cash provided by (used in) operating activities:    
Stock-based compensation 11,380 14,750
Amortization of premiums and accretion of discounts on investment securities (2,116) (1,786)
Amortization of intangible assets 2,722 5,286
Depreciation 229 242
Changes in operating assets and liabilities:    
Accounts receivable, net (7,004) 3,566
Interest and other receivables (2,015) (1,295)
Inventory (10,453) (16,648)
Prepaid expenses 2,978 (3,670)
Other assets (585) 0
Operating lease right-of-use assets 2,137 1,759
Accounts payable 1,903 1,789
Accrued liabilities (116) 12,193
Operating lease liabilities 369 212
Long-term liabilities 1,907 (3,874)
Net cash provided by operating activities 20,323 29,079
Cash flows from investing activities    
Purchases of investment securities (156,011) (80,154)
Sale and maturity of investment securities 130,800 66,115
Intangible assets (98,838) 0
Net cash used in investing activities (124,049) (14,039)
Cash flows from financing activities    
Proceeds from issuance of common stock, net of issuance costs 1,838 1,043
Net cash provided by financing activities 1,838 1,043
Effect of exchange rate changes on cash (5) 5
Net (decrease) increase in cash, cash equivalents and restricted cash (101,893) 16,088
Cash, cash equivalents and restricted cash    
Beginning of period 328,359 194,427
End of period 226,466 210,515
Supplemental disclosure of noncash information:    
Accrued inventory purchases 759 9,354
Accrued milestone and contingent payments in connection with asset acquisition 0 50,000
Stock based compensation capitalized $ 94 $ 194