INTANGIBLE ASSETS (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
INTANGIBLE ASSETS [Abstract]
Goodwill	$ 439,811	$ 439,811
Identifiable intangible assets [Abstract]
Gross carrying amount	250,250	250,099
Accumulated amortization	109,709	102,615
Amortization of identifiable finite-lived intangible assets [Abstract]
Amortization of identifiable intangible assets	7,090
Finite-lived intangible assets, future amortization expense [Abstract]
Remainder of 2017	19,070
2018	23,655
2019	21,620
2020	19,645
2021	16,485
2022	15,165
Indefinite-lived intangible assets	$ 0
Customer Relationships & Lists [Member]
Identifiable intangible assets [Abstract]
Amortization period (in years)	10 years
Gross carrying amount	$ 185,885	185,885
Accumulated amortization	$ 91,590	86,338
Trademarks & Trade Names [Member]
Identifiable intangible assets [Abstract]
Amortization period (in years)	17 years
Gross carrying amount	$ 39,241	39,241
Accumulated amortization	$ 10,157	9,260
Developed Technology [Member]
Identifiable intangible assets [Abstract]
Amortization period (in years)	5 years
Gross carrying amount	$ 12,260	12,260
Accumulated amortization	3,971	3,358
Other [Member]
Identifiable intangible assets [Abstract]
Gross carrying amount	12,864	12,713
Accumulated amortization	$ 3,991	$ 3,659
Other [Member] | Minimum [Member]
Identifiable intangible assets [Abstract]
Amortization period (in years)	5 years
Other [Member] | Maximum [Member]
Identifiable intangible assets [Abstract]
Amortization period (in years)	17 years