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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
OPERATING ACTIVITIES    
Net (loss) income $ (21,826) $ 8,655
Adjustments to reconcile net (loss) income to net cash provided by operating activities:    
Depreciation and amortization 36,994 10,229
Stock-based compensation expense 34,487 38,881
Change in fair value of equity securities (3,321) 0
Deferred income taxes (5,321) 3,708
Accretion of discounts on marketable investment securities (3,511) (5,072)
Other 282 208
Change in operating assets and liabilities:    
Accounts receivable 604 (11,874)
Prepaid expenses and other current assets (4,535) (1,679)
Inventory (538) 1,370
Operating lease assets 1,016 1,002
Other assets (54) (35)
Accounts payable 3,095 (3,802)
Operating lease liabilities (1,066) (863)
Accrued compensation (792) (1,273)
Other accrued and current liabilities 1,902 1,046
Net cash provided by operating activities 37,416 40,501
INVESTING ACTIVITIES    
Purchases of marketable investment securities (151,306) (158,409)
Proceeds from maturities of marketable investment securities 135,200 123,250
Purchases of debt securities classified as held-to-maturity (5,569) 0
Asset acquisition, net of cash and cash equivalents acquired (18,726) 0
Purchases of property and equipment (28,837) (20,759)
Proceeds from sale of property and equipment 40 11
Net cash used in investing activities (69,198) (55,907)
FINANCING ACTIVITIES    
Proceeds from exercise of common stock options 114 1,644
Payment of employees’ taxes on vested restricted stock units (4,289) (2,383)
Proceeds from contributions to the employee stock purchase plan 1,702 2,334
Repayment of principal portion of finance lease liabilities (88) (71)
Proceeds from lease incentives received 190 0
Proceeds from issuance of term debt 0 10,000
Net cash (used in) provided by financing activities (2,371) 11,524
NET CHANGE IN CASH AND CASH EQUIVALENTS (34,153) (3,882)
Beginning of period 119,709 98,841
End of period 85,556 94,959
DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:    
Asset acquisition, liability for contingent consideration 2,500 0
Accrued purchases of property and equipment 4,446 1,570
Operating lease assets obtained in exchange for lease obligations 4,687 607
Decrease in operating lease assets with corresponding change in lease liabilities (104) (7)
Finance lease assets obtained in exchange for lease obligations 119 166
Property and equipment acquired with tenant improvement allowance $ 7,224 $ 1,389