Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Schedule of Reconciliation of Contingent Consideration Measured at Fair Value on Recurring Basis (Detail)

v3.19.3.a.u2
Fair Value Measurements - Schedule of Reconciliation of Contingent Consideration Measured at Fair Value on Recurring Basis (Detail) - Contingent Consideration [Member] - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning balance $ 2,875 $ 0
Contingent consideration in connection with acquisitions 2,382 2,674
Change in fair value of contingent consideration 202 201
Payments of contingent consideration (671) 0
Ending balance $ 4,788 $ 2,875