Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets

The following is a summary of the Company’s other intangible assets as of December 31 (in thousands):

	2017			2016			Weighted Average Life
Customer lists	$	74,615		$	72,667		13.6
Non-competition agreements	964			943			4.1
Trade names	2,510			2,510			13.3
Patents	57			57			9.0
	78,146			76,177
Less accumulated amortization	(50,583		)	(44,639		)
Intangible assets, net	$	27,563		$	31,538

Schedule of Future Amortization Expense

The estimated amortization expense for the next five years and thereafter, is as follows (in thousands):

2018	$	4,571
2019	4,338
2020	4,168
2021	3,862
2022	3,366
Thereafter	7,258
	$	27,563