Goodwill and Intangibles (Tables)

3 Months Ended

Mar. 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, 2021	$	286,874	$	(70,004)	$	216,870
Business Combinations	25,141		—		25,141
Other	25		—		25
March 31, 2021	$	312,040	$	(70,004)	$	242,036

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 March 31,						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	$	215,841	$	94,790	$	121,051	$	197,641	$	89,137	$	108,504
Covenants not-to-compete	22,914		14,127		8,787		20,309		13,436		6,873
Trademarks and tradenames	84,057		28,488		55,569		79,657		27,245		52,412
Backlog	18,847		16,052		2,795		18,847		15,243		3,604
	$	341,659	$	153,457	$	188,202	$	316,454	$	145,061	$	171,393

Schedule of Estimated Aggregate Annual Amortization

Remaining estimated aggregate annual amortization expense is as follows (amounts, in thousands, are for the fiscal year ended):

Remainder of 2021	$	25,886
2022	31,215
2023	27,778
2024	24,265
2025	18,860
Thereafter	60,198