Acquisitions -Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2021 USD ($) Businesses
Business Acquisition [Line Items]
Period of settlement of holdback consideration			18 months	18 months
2021 Acquisitions
Business Acquisition [Line Items]
Number of acquired businesses | Business | Businesses				3
Purchase price				$ 26,984
Cash paid for business acquisition				20,426
Contingent consideration		$ 5,100		5,100
Business combination holdback consideration payable		1,400		1,400
Business acquisition, maximum contingent consideration		13,500		13,500
Business Acquisition, Goodwill, Expected Tax Deductible Amount		9,000		9,000
Business combination revenue of the acquiree since acquisition date		$ 6,300		$ 10,900
2022 Acquisitions
Business Acquisition [Line Items]
Purchase price			$ 68,931
Cash paid for business acquisition			67,611
Contingent consideration	$ 500		500
Business combination holdback consideration payable	800		800
Business acquisition, maximum contingent consideration	1,600		1,600
Business Acquisition, Goodwill, Expected Tax Deductible Amount	800		800
Business combination revenue of the acquiree since acquisition date	$ 8,000		$ 8,500