COMMITMENTS, CONTINGENCIES AND REGULATORY MATTERS (Tables)

12 Months Ended

Dec. 31, 2017

Commitments and Contingencies Disclosure [Abstract]

Schedule of future minimum lease payments under non-cancelable capital and operating leases with an original term exceeding one year

Future minimum lease payments at December 31, 2017 under non-cancelable operating leases with an original term exceeding one year are as follows:

(in thousands)	Operating lease obligations
2018	$	19,833
2019	14,012
2020	10,222
2021	6,817
2022	2,676
Thereafter	230
	$	53,790