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Fair Value Measurements - Additional Information (Details)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 11, 2021
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Sep. 30, 2021
USD ($)
Sep. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Gain on sale of business and other, net   $ 45,621 $ 263 $ 46,806 $ 948  
Redeemable Preferred Stock            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Gain on sale of business and other, net $ 1,200          
Dividend rate           6.00%
Debt Securities, Available-for-sale           $ 10,000
Conversion ratio           1.00%
Amount of shares held           $ 1,000
Minimum | Measurement Input, Discount Rate | Fair Value, Inputs, Level 3            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Contingent consideration liability, measurement input   0.035   0.035    
Maximum | Measurement Input, Discount Rate | Fair Value, Inputs, Level 3            
Fair Value Measurement Inputs and Valuation Techniques [Line Items]            
Contingent consideration liability, measurement input   0.051   0.051