Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2019

Intangible Assets Gross Excluding Goodwill [Abstract]

Schedule of Other Intangible Assets

Other intangible assets consist of the following:

(in thousands)	June 30, 2019			December 31, 2018
Finite-lived intangible assets:
Customer relationships	$	114,987		$	114,603
Noncompete agreements		13,536			14,402
Trademarks		10,776			10,753
Internal-use software licenses		23,575			29,394
Patents		2,840			2,840
		165,714			171,992
Accumulated amortization		(86,094	)		(79,535	)
		79,620			92,457
Indefinite-lived intangible assets:
Licenses		16,915			16,915
	$	96,535		$	109,372

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 2019	$	11,660
2020	$	14,933
2021	$	11,415
2022	$	10,447
2023	$	9,851
2024	$	7,197