Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Components of Goodwill

Goodwill consisted of the following:

	Amount
Balance at January 1, 2016	$	112,425
Additions through acquisitions		—
Other adjustments		—
Balance at March 31, 2016	$	112,425

Components of Intangible Assets

The Company’s intangible assets consisted of the following:

		March 31, 2016							December 31, 2015
	Useful life			Accumulated							Accumulated
	(years)	Cost		amortization			Net		Cost		amortization			Net
Customer lists	5-14	$	90,212	$	(13,472	)	$	76,740	$	90,212	$	(11,319	)	$	78,893
Patents and    technology	5-10		16,510		(4,555	)		11,955		16,390		(4,090	)		12,300
Trade names and    trademarks	1-2		2,884		(1,350	)		1,534		2,885		(906	)		1,979
		$	109,606	$	(19,377	)	$	90,229	$	109,487	$	(16,315	)	$	93,172

Estimated Annual Amortization Expense for Intangible Assets

Estimated annual amortization expense for intangible assets subsequent to March 31, 2016 is as follows:

	Amount
2016 (remaining)	$	9,193
2017		10,628
2018		10,374
2019		10,339
2020		10,061
2021		9,604
Thereafter		30,030
	$	90,229