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Fair Value Measurements - Narrative (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2023
Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair value disclosure $ 0 $ 0 $ 0
Cost basis     71,900,000
Cumulative unrealized loss 400,000 400,000  
Short-Term Investments      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair value     70,800,000
Cumulative unrealized loss 1,100,000 1,100,000 $ 1,100,000
Unrealized gain $ 100,000 $ 700,000