GOODWILL AND INTANGIBLE ASSETS (Schedule of Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Finite Lived And Indefinite Intangible Assets [Line Items]
Gross Carrying Value	$ 191,355	$ 183,128
Accumulated Amortization	(88,282)	(80,778)
Net Carrying Value	103,073	102,350
Customer lists
Finite Lived And Indefinite Intangible Assets [Line Items]
Gross Carrying Value	142,481	138,149
Accumulated Amortization	(73,712)	(69,904)
Net Carrying Value	68,769	68,245
Non-compete agreements
Finite Lived And Indefinite Intangible Assets [Line Items]
Gross Carrying Value	15,010	13,170
Accumulated Amortization	(8,041)	(6,891)
Net Carrying Value	6,969	6,279
Developed technology
Finite Lived And Indefinite Intangible Assets [Line Items]
Gross Carrying Value	23,414	23,000
Accumulated Amortization	(3,475)	(1,843)
Net Carrying Value	19,939	21,157
Other
Finite Lived And Indefinite Intangible Assets [Line Items]
Gross Carrying Value	10,450	8,809
Accumulated Amortization	(3,054)	(2,140)
Net Carrying Value	$ 7,396	$ 6,669