Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2017

Intangible Assets Gross Excluding Goodwill [Abstract]

Schedule of Other Intangible Assets

Other intangible assets consist of the following:

(in thousands)	March 31, 2017			December 31, 2016
Finite-lived intangible assets:
Customer relationships	$	117,098		$	118,298
Noncompete agreements		30,362			30,332
Trademarks		10,800			10,097
Internal-use software licenses		23,045			16,580
Patents		2,840			2,840
		184,145			178,147
Accumulated amortization		(122,619	)		(116,133	)
		61,526			62,014
Indefinite-lived intangible assets:
Licenses		16,884			16,884
	$	78,410		$	78,898

Estimated Amortization Expense for Finite-Lived Intangible Assets

Estimated amortization expense for finite-lived intangible assets for the next five years is as follows:

Year	(in thousands)
Remainder of 2017	$	17,013
2018	$	11,298
2019	$	8,556
2020	$	4,940
2021	$	3,092
2022	$	2,463