Goodwill and Intangibles (Tables)

12 Months Ended

Dec. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Change in Carrying Amount of Goodwill

The change in carrying amount of goodwill was as follows (in thousands):

	Goodwill (Gross)		Accumulated Impairment Losses		Goodwill (Net)
January 1, 2020	$	265,656	$	(70,004)	$	195,652
Business combinations	21,305		—		21,305
Other	(87)		—		(87)
December 31, 2020	286,874		(70,004)		216,870
Business combinations	105,617		—		105,617
Other	30		—		30
December 31, 2021	$	392,521	$	(70,004)	$	322,517

Schedule of Gross Carrying Amount, Accumulated Amortization and Net Book Value

The following table provides the gross carrying amount, accumulated amortization and net book value for each major class of intangibles (in thousands):

	As of December 31,
	2021						2020
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Amortized intangibles:
Customer relationships	$	292,113	$	113,849	$	178,264	$	197,641	$	89,137	$	108,504
Covenants not-to-compete	27,717		16,471		11,246		20,309		13,436		6,873
Trademarks and tradenames	103,007		32,623		70,384		79,657		27,245		52,412
Backlog	23,724		19,197		4,527		18,847		15,243		3,604
	$	446,561	$	182,140	$	264,421	$	316,454	$	145,061	$	171,393

Schedule of Estimated Aggregate Annual Amortization

Remaining estimated aggregate annual amortization expense is as follows (in thousands):

2022	$41,780
2023	37,458
2024	33,762
2025	27,440
2026	23,489
Thereafter	100,492