Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets of Company by Major Class

The following table summarizes the intangible assets of the Company by major class of intangible asset and the cost, accumulated amortization, net carrying amount, and weighted average life, if applicable (in thousands):

	June 30, 2018								December 31, 2017
								Weighted								Weighted
								Average								Average
	Gross					Net		Useful	Gross					Net		Useful
	Carrying		Accumulated			Carrying		Life	Carrying		Accumulated			Carrying		Life
	Amount		Amortization			Amount		(years)	Amount		Amortization			Amount		(years)
Intangible assets subject to amortization
Customer relationships and other intangibles	$	137,672	$	(76,333	)	$	61,339	16	$	138,110	$	(72,192	)	$	65,918	16
Non-compete agreements		4,652		(4,260	)		392	4		4,659		(4,260	)		399	4
Trademarks		13,725		(6,909	)		6,816	14		13,766		(6,642	)		7,124	14
Total	$	156,049	$	(87,502	)	$	68,547		$	156,535	$	(83,094	)	$	73,441

Summary of Amortization Expense to be Incurred in 2018 Through 2022 on Intangible Assets

The following table summarizes the amortization expense to be incurred in 2018 through 2022 on intangible assets (in thousands):

Year	Amount
2018	$	8,063
2019		6,937
2020		6,934
2021		6,934
2022		6,880