Goodwill and Intangibles (Tables)

6 Months Ended

Jun. 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		4,733			—			4,733
Other		(121	)		—			(121	)

June 30, 2020	$	270,268		$	(70,004	)	$	200,264

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 June 30,						As of December 31,
	2020						2019
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Amortized intangibles:
Customer relationships	$	173,115	$	78,784	$	94,331	$	169,334	$	69,388	$	99,946
Covenants not-to-compete		17,389		12,088		5,301		16,959		10,617		6,342
Trademarks and tradenames		71,543		24,908		46,635		69,718		22,609		47,109
Backlog		15,004		14,154		850		14,080		13,915		165

	$	277,051	$	129,934	$	147,117	$	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	$	13,268
2021		25,573
2022		24,162
2023		21,251
2024		17,736
Thereafter		45,127