Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Components of Goodwill

Goodwill consisted of the following:

	Amount
Balance at January 1, 2017	$	114,033
Additions through acquisitions		—
Other measurement period adjustments		—
Balance at March 31, 2017	$	114,033

Components of Intangible Assets

The Company’s intangible assets consisted of the following:

		March 31, 2017							December 31, 2016
	Useful life			Accumulated							Accumulated
	(years)	Cost		amortization			Net		Cost		amortization			Net
Customer lists	5-14	$	91,757	$	(22,214	)	$	69,543	$	91,757	$	(20,026	)	$	71,731
Patents and    technology	5-10		16,734		(6,428	)		10,306		16,556		(5,990	)		10,566
Trade names and    trademarks	1-2		2,885		(2,703	)		182		2,885		(2,637	)		248
		$	111,376	$	(31,345	)	$	80,031	$	111,198	$	(28,653	)	$	82,545

Estimated Annual Amortization Expense for Intangible Assets

Estimated annual amortization expense for intangible assets subsequent to March 31, 2017 is as follows:

	Amount
2017 (remaining)	$	8,071
2018		10,508
2019		10,472
2020		10,189
2021		9,727
2022		9,271
Thereafter		21,793
	$	80,031