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Description of Business (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Subsidiary, Sale of Stock [Line Items]
Accumulated deficit	$ (1,138,084)	$ (1,121,943)
Cash, cash equivalents, restricted cash and marketable securities	221,300	228,600
Long-term debt	108,959	$ 107,203
Loan agreement | Secured debt
Subsidiary, Sale of Stock [Line Items]
Long-term debt	$ 100,000

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Cash, Cash Equivalents and Marketable Securities

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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