CUSTOMER CONTRACTS AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of carrying amount and accumulated amortization for customer contracts

The carrying amount and accumulated amortization for customer contracts were as follows:

December 31,	2017			2016
(in thousands)
Customer contracts	$	290,628		$	251,194
Less: Accumulated amortization	(137,759		)	(133,728		)
Customer contracts, net	$	152,869		$	117,466

Schedule of carrying amount and accumulated amortization for other intangible assets

The carrying amount and accumulated amortization for other intangible assets were as follows:

At December 31,	2017			2016
(in thousands)
Other intangible assets	$	75,780		$	56,937
Less:  Accumulated amortization	(14,232		)	(12,627		)
Other intangible assets, net	$	61,548		$	44,310

Schedule of customer contracts and other intangible assets

The carrying amount of customer contracts and other intangible assets, net were as follows:

December 31,	2017		2016
(in thousands)
Customer contracts, net	$	152,869	$	117,466
Other intangible assets, net	61,548		44,310
Customer contracts and other intangible assets, net	$	214,417	$	161,776

Schedule of estimated amortization expense for the existing carrying amount of customer contracts and other intangible assets

Estimated amortization expense for the existing carrying amount of customer contracts and other intangible assets for each of the five succeeding fiscal years are as follows:

(in thousands)
2018	$	27,029
2019	24,052
2020	21,872
2021	20,431
2022	18,925