Business Combinations - Summary of Business Acquisitions (Detail) - USD ($) $ in Thousands							12 Months Ended
	Mar. 12, 2023	Dec. 19, 2022	Apr. 11, 2022	Dec. 12, 2021	Sep. 13, 2021	Mar. 01, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Cash Paid							$ 59,600	$ 114,000	$ 243,000
Seller Obligations							4,300	31,500	27,900
Total Purchase Price							63,900	145,500	270,900
Revenue							39,400	61,100	82,400
Net Income (Loss)							1,800	(300)	2,600
CAS
Business Acquisition [Line Items]
Cash Paid			$ 55,100					55,100
Seller Obligations			27,300					27,300
Total Purchase Price			82,400
Revenue			37,800
Net Income (Loss)			$ (1,000)
ABS
Business Acquisition [Line Items]
Cash Paid		$ 23,100						23,100
Seller Obligations		500						500
Total Purchase Price		23,600
Revenue		700
Net Income (Loss)		$ (100)
IWI
Business Acquisition [Line Items]
Cash Paid						$ 42,100			42,100
Seller Obligations						6,000			6,000
Total Purchase Price						48,100
Revenue						36,200
Net Income (Loss)						$ 3,300
Five Star
Business Acquisition [Line Items]
Cash Paid					$ 26,300				26,300
Seller Obligations					5,500				5,500
Total Purchase Price					31,800
Revenue					6,900
Net Income (Loss)					$ (100)
AMD
Business Acquisition [Line Items]
Cash Paid				$ 119,500					119,500
Seller Obligations				6,600					6,600
Total Purchase Price				126,100
Revenue				3,700
Net Income (Loss)				$ (200)
Other
Business Acquisition [Line Items]
Cash Paid								35,800	55,100
Seller Obligations								3,700	9,800
Total Purchase Price								39,500	64,900
Revenue								22,600	35,600
Net Income (Loss)								$ 800	$ (400)
Anchor
Business Acquisition [Line Items]
Cash Paid	$ 35,900						35,900
Seller Obligations	2,700						2,700
Total Purchase Price	38,600
Revenue	30,400
Net Income (Loss)	$ 1,600
Other Acquisitions
Business Acquisition [Line Items]
Cash Paid							23,700
Seller Obligations							1,600
Total Purchase Price							25,300
Revenue							9,000
Net Income (Loss)							$ 200