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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2024
Sep. 30, 2023
Cash flows from operating activities:    
Net loss $ (177,536) $ (146,849)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:    
Depreciation and amortization 12,739 14,821
Non-cash operating lease cost 2,155 3,858
Stock-based compensation to employees and directors 16,384 17,863
(Increase) decrease in deferred income taxes, net 184 (25,010)
Gain on sale of intangible assets (10,250) 0
Write-down of assets held for sale 1,648 0
Loss from equity method securities 43,405 126,966
Other non-cash adjustments (400) (532)
Changes in operating assets and liabilities:    
Accounts receivable, net 4,393 (1,887)
Inventories 1,982 (4,993)
Prepaids and other current assets (438) 490
Other long-term assets, net (1,335) (1,195)
Accounts payable (18,554) 11,749
Accrued liabilities (19,372) 9,171
Unearned revenue (4,648) 2,970
Operating lease liabilities (2,168) (4,170)
Other long-term liabilities (814) 5,879
Net cash (used in) provided by operating activities (152,625) 9,131
Cash flows from investing activities:    
Proceeds from the sale of intangible assets 10,250 0
Expenditures for property and equipment (11,329) (16,543)
Purchase of intangible assets (6,033) (25,782)
Disbursement for notes receivable 0 (10,000)
Other investing activities, net 566 566
Net cash used in investing activities (6,546) (51,759)
Cash flows from financing activities:    
Payments of taxes withheld upon vesting of employee stock awards (3,271) (2,581)
Other financing activities, net 1,190 (775)
Net cash used in financing activities (2,081) (3,356)
Net decrease in cash, cash equivalents, and restricted cash (161,252) (45,984)
Cash, cash equivalents, and restricted cash, beginning of period 302,749 371,457
Cash, cash equivalents, and restricted cash, end of period $ 141,497 $ 325,473