Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Additional Information (Detail)

v3.19.3.a.u2
Fair Value Measurements - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2019
USD ($)
Dec. 31, 2018
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, assets, level 3 transfers, amount $ 0  
Contingent consideration, maximum undiscounted payment $ 7,300,000 $ 4,200,000
Measurement Input, Constant Prepayment Rate [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Servicing Asset, Measurement Input 0.1 0.1
Recurring [Member] | Maximum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Earn-out period for contingent consideration 7 years  
Recurring [Member] | Minimum [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Earn-out period for contingent consideration 1 year