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Income Taxes - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Income Tax Contingency [Line Items]        
Provision for income taxes $ 1,171,000 $ 647,000 $ 3,113,000  
Foreign withholding income tax 400,000 500,000 3,000,000.0  
Increase (decrease) in valuation allowance (800,000) 40,100,000    
Operating loss carryforwards, subject to expiration 3,500,000      
Operating loss carryforwards, not subject to expiration 757,800,000      
Unrecognized tax benefits 43,382,000 42,286,000 41,390,000 $ 42,505,000
Unrecognized tax benefits that would not impact effective tax rate 36,200,000      
Unrecognized tax benefits, income tax penalties and interest expense 0 0 0  
Accrued interest and penalties 0 0    
Cash income taxes paid 0 $ 0 $ 0  
Federal        
Income Tax Contingency [Line Items]        
Operating loss carryforwards 761,300,000      
Federal | Research tax credit carryforward        
Income Tax Contingency [Line Items]        
Tax credit carryforwards 23,200,000      
State        
Income Tax Contingency [Line Items]        
Operating loss carryforwards 636,100,000      
Operating loss carryforwards, subject to expiration 550,200,000      
State | Research tax credit carryforward        
Income Tax Contingency [Line Items]        
Tax credit carryforwards 4,600,000      
Foreign Tax Jurisdiction        
Income Tax Contingency [Line Items]        
Operating loss carryforwards, not subject to expiration $ 23,200,000