Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 2,164,285	$ 2,097,684
Accumulated Amortization	(630,043)	(494,275)
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	1,846,465	1,781,264
Accumulated Amortization	(451,948)	(328,540)
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	201,861	201,861
Accumulated Amortization	(159,987)	(155,141)
Subcontractor Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	5,440	5,440
Accumulated Amortization	(4,664)	(3,757)
Non-compete Agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	14,919	13,519
Accumulated Amortization	(4,458)	(3,243)
Developed Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	95,600	95,600
Accumulated Amortization	$ (8,986)	$ (3,594)