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Fair Value Measurements - Summary of Financial Assets (Liabilities) at Fair Value Measured on Recurring Basis (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Contingent consideration liabilities     $ (17,125)
Fair Value, Measurements, Recurring [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Contingent consideration liabilities   $ (6,069)  
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap Contracts [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair value of financial liability $ (43)    
Fair value of financial asset   106  
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Interest Rate Swap Contracts [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Fair value of financial liability $ (43)    
Fair value of financial asset   106  
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Contingent consideration liabilities   $ (6,069)