Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Components of Goodwill

Goodwill consisted of the following:

	2016		2015
Balance at January 1,	$	112,425	$	39,870
Additions through acquisitions		1,409		72,528
Measurement period adjustments		199		27
Balance at December 31,	$	114,033	$	112,425

Components of Intangible Assets

The Company’s intangible assets consisted of the following:

		December 31, 2016							December 31, 2015
	Useful life (years)	Cost		Accumulated amortization			Net		Cost		Accumulated amortization			Net
Customer lists	5 -14	$	91,757	$	(20,026	)	$	71,731	$	90,212	$	(11,319	)	$	78,893
Patents and technology	5-10		16,556		(5,990	)		10,566		16,390		(4,090	)		12,300
Trade names and trademarks	1-2		2,885		(2,637	)		248		2,885		(906	)		1,979
		$	111,198	$	(28,653	)	$	82,545	$	109,487	$	(16,315	)	$	93,172

Estimated Annual Amortization Expense for Intangible Assets

Estimated amortization expense for intangible assets is as follows:

Years ending December 31,
2017	$	10,761
2018		10,508
2019		10,472
2020		10,189
2021		9,727
Thereafter		30,888
	$	82,545