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Fair value Measurement - Additional Information (Details) - Fair Value, Recurring - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Total liabilities measured at fair value $ 0 $ 2,112
Level 2    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair value of outstanding debt $ 32,500 $ 31,900