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Fair Value - Additional Information (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2020
USD ($)
item
Jun. 30, 2019
USD ($)
Jun. 30, 2020
USD ($)
item
Jun. 30, 2019
USD ($)
Dec. 31, 2019
USD ($)
item
Fair Value          
Transfers between the levels     $ 0    
Contingent consideration $ 45,063,000   45,063,000   $ 32,400,000
Increase (decrease) in the fair value of contingent consideration 5,900,000 $ (6,500,000) 12,700,000 $ (29,100,000)  
2023 Term Loan          
Fair Value          
Amount to be realized in future $ 264,000,000.0   $ 264,000,000.0   $ 277,900,000
Discount Rate          
Fair Value          
Discount rate (as a percent) | item 16   16   16