Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.21.2
Fair Value Measurements - Additional Information (Detail) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Percentage of Debt Hedged by Interest Rate Derivatives 10.50%      
Current portion of the fair value of contingent consideration $ 16,200   $ 5,500  
Non-current portion of the fair value of the contingent consideration 6,000   16,600  
Contingent consideration 2,700 $ 500    
Unrealized gains or losses 0      
Fair value transfers related to purchases, issues and sales 0 0    
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Liabilities measured at fair value 73,170 25,540 52,519 $ 24,418
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Make-Whole provision on class B units [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Liabilities measured at fair value $ 51,035 $ 891 $ 30,423 $ 891
Maximum [Member] | Measurement Input, Risk Free Interest Rate [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Business Combination, Contingent Consideration, Liability, Measurement Input 0.0010      
Maximum [Member] | Measurement Input, Price Volatility [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Business Combination, Contingent Consideration, Liability, Measurement Input 0.35      
Maximum [Member] | Measurement Input, Discount Rate [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Business Combination, Contingent Consideration, Liability, Measurement Input 0.121      
Minimum [Member] | Measurement Input, Risk Free Interest Rate [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Business Combination, Contingent Consideration, Liability, Measurement Input 0.0005      
Minimum [Member] | Measurement Input, Price Volatility [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Business Combination, Contingent Consideration, Liability, Measurement Input 0.15      
Minimum [Member] | Measurement Input, Discount Rate [Member]        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Business Combination, Contingent Consideration, Liability, Measurement Input 0.055