Goodwill and Intangibles (Tables)

9 Months Ended

Sep. 30, 2016

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, 2016	$	160,516	$	(70,004	)	$	90,512
Business Combinations		12,006		—			12,006
September 30, 2016	$	172,522	$	(70,004	)	$	102,518

Schedule of Gross Carrying Amount and Accumulated Amortization

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

	As of September 30, 2016						As of December 31, 2015
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Amortized intangibles:
Customer relationships	$	75,261	$	25,562	$	49,699	$	62,399	$	20,231	$	42,168
Covenants not-to-compete		8,143		2,003		6,140		5,729		847		4,882
Trademarks and tradenames		34,436		9,852		24,584		28,320		8,152		20,168
	$	117,840	$	37,417	$	80,423	$	96,448	$	29,230	$	67,218

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 2016	$	2,859
2017		11,045
2018		10,741
2019		10,229
2020		9,622
Thereafter		35,927