Goodwill and Intangibles (Tables)

9 Months Ended

Sep. 30, 2020

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		11,250			—			11,250
Other		(120	)		—			(120	)
September 30, 2020	$	276,786		$	(70,004	)	$	206,782

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 September 30,						As of December 31,
	2020						2019
	Gross				Net		Gross				Net
	Carrying		Accumulated		Book		Carrying		Accumulated		Book
	Amount		Amortization		Value		Amount		Amortization		Value
Amortized intangibles:
Customer relationships	$	184,562	$	83,719	$	100,843	$	169,334	$	69,388	$	99,946
Covenants not-to-compete		18,944		12,761		6,183		16,959		10,617		6,342
Trademarks and tradenames		73,543		26,042		47,501		69,718		22,609		47,109
Backlog		15,256		14,385		871		14,080		13,915		165
	$	292,305	$	136,907	$	155,398	$	270,091	$	116,529	$	153,562

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 2020	$	7,069
2021		27,621
2022		26,037
2023		23,126
2024		19,611
Thereafter		51,934