Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2019

Goodwill And Intangible Assets Disclosure [Abstract]

Components of Intangible Assets

The Company’s intangible assets, net consisted of the following:

		March 31, 2019							December 31, 2018
	Useful life			Accumulated							Accumulated
	(years)	Cost		amortization			Net		Cost		amortization			Net
Customer lists	5 - 15	$	113,357	$	(42,589	)	$	70,768	$	113,357	$	(39,966	)	$	73,391
Patents and    technology	3 - 10		23,424		(11,163	)		12,261		23,424		(10,551	)		12,873
Trade names and    trademarks	1 - 2		3,003		(3,003	)		—		3,003		(3,003	)		—
		$	139,784	$	(56,755	)	$	83,029	$	139,784	$	(53,520	)	$	86,264

Estimated Future Amortization Expense for Intangible Assets

Estimated future amortization expense for intangible assets is as follows:

	Amount
2019 (remaining)	$	9,732
2020		12,066
2021		11,515
2022		11,060
2023		10,829
2024		10,449
Thereafter		17,378
	$	83,029