GOODWILL AND INTANGIBLE ASSETS (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Finite Lived And Indefinite Intangible Assets [Line Items]
Gross Carrying Value	$ 187,920	$ 183,128
Accumulated Amortization	(91,509)	(80,778)
Net Carrying Value	96,411	102,350
Customer lists
Finite Lived And Indefinite Intangible Assets [Line Items]
Gross Carrying Value	139,720	138,149
Accumulated Amortization	(75,441)	(69,904)
Net Carrying Value	64,279	68,245
Non-compete agreements
Finite Lived And Indefinite Intangible Assets [Line Items]
Gross Carrying Value	14,717	13,170
Accumulated Amortization	(8,513)	(6,891)
Net Carrying Value	6,204	6,279
Developed technology
Finite Lived And Indefinite Intangible Assets [Line Items]
Gross Carrying Value	23,498	23,000
Accumulated Amortization	(4,285)	(1,843)
Net Carrying Value	19,213	21,157
Other
Finite Lived And Indefinite Intangible Assets [Line Items]
Gross Carrying Value	9,985	8,809
Accumulated Amortization	(3,270)	(2,140)
Net Carrying Value	$ 6,715	$ 6,669