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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Cash flows from operating activities    
Net loss $ (70,618) $ (830,943)
Adjustments to reconcile net loss to net cash provided by operating activities:    
Share-based compensation expense 25,094 69,267
Depreciation and amortization expense 63,641 58,966
Deferred tax assets 319 141,103
Operating lease expense, net of accretion 2,883 4,647
Amortization of debt issuance costs 459 1,628
Loss from write-offs of property and equipment 793 2,024
Gain on early extinguishment of debt (7,360) 0
Realized gain on sale of investments (752) 0
Impairment expense 2,000 677,239
Impairment of lease related assets 3,004 2,189
Impairment of strategic equity investment 6,000 0
Loss contingency 0 5,100
Other non-cash items 1,049 222
Change in assets and liabilities:    
Accounts receivable 8,592 8,019
Prepaid expenses and other current assets 7,822 (55,725)
Other assets 1,323 (469)
Accounts payable (4,977) (8,308)
Deferred revenue (8,195) (11,763)
Accrued liabilities (3,301) 46,849
Other liabilities (3,277) (2,968)
Net cash provided by operating activities 24,499 107,077
Cash flows from investing activities    
Purchases of property and equipment (21,651) (61,659)
Purchases of investments (793) (134,213)
Maturities of investments 111,124 96,907
Proceeds from sale of investments 181,158 0
Proceeds from sale of strategic equity investment 0 15,500
Net cash provided by (used in) investing activities 269,838 (83,465)
Cash flows from financing activities    
Repayment of convertible senior notes (416,492) 0
Payment of taxes related to the net share settlement of equity awards (1,642) (8,648)
Proceeds from common stock issued under stock plans 392 2,191
Net cash used in financing activities (417,742) (6,457)
Effect of exchange rate changes (160) (149)
Net (decrease) increase in cash, cash equivalents and restricted cash (123,565) 17,006
Cash, cash equivalents and restricted cash, beginning of period 164,359 137,976
Cash, cash equivalents and restricted cash, end of period 40,794 154,982
Supplemental cash flow data:    
Interest 224 449
Income taxes, net of refunds 2,205 3,531
Cash paid for amounts included in the measurement of lease liabilities:    
Operating cash flows from operating leases 5,429 6,329
Right of use assets obtained in exchange for lease obligations:    
Operating leases 1,636 9,686
Non-cash investing and financing activities:    
Accrued purchases of long-lived assets $ 1,750 $ 4,771