INTANGIBLE ASSETS, Identifiable Intangible Assets with Finite Lives (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Identifiable intangible assets [Abstract]
Gross carrying amount	$ 256,748	$ 250,099
Accumulated amortization	116,171	102,615
Amortization of identifiable finite-lived intangible assets [Abstract]
Amortization of identifiable intangible assets	13,545
Finite-lived intangible assets, future amortization expense [Abstract]
Remainder of 2017	13,190
2018	24,485
2019	22,375
2020	20,370
2021	17,180
2022	15,300
Indefinite-lived intangible assets	$ 0
Customer Relationships & Lists [Member]
Identifiable intangible assets [Abstract]
Amortization period	10 years
Gross carrying amount	$ 189,715	185,885
Accumulated amortization	$ 96,176	86,338
Trademarks & Trade Names [Member]
Identifiable intangible assets [Abstract]
Amortization period	17 years
Gross carrying amount	$ 40,630	39,241
Accumulated amortization	$ 11,060	9,260
Developed Technology [Member]
Identifiable intangible assets [Abstract]
Amortization period	5 years
Gross carrying amount	$ 13,338	12,260
Accumulated amortization	4,602	3,358
Other [Member]
Identifiable intangible assets [Abstract]
Gross carrying amount	13,065	12,713
Accumulated amortization	$ 4,333	$ 3,659
Other [Member] | Minimum [Member]
Identifiable intangible assets [Abstract]
Amortization period	5 years
Other [Member] | Maximum [Member]
Identifiable intangible assets [Abstract]
Amortization period	17 years