Other Identifiable Intangible Assets, Net (Table) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross	$ 607,791	$ 496,899
Accumulated Amortization	(255,643)	(218,629)
Finite-Lived Intangible Assets, Net	352,148	278,270
Client lists
Finite-Lived Intangible Assets [Line Items]
Gross	496,192	394,070
Accumulated Amortization	(219,887)	(192,612)
Finite-Lived Intangible Assets, Net	276,305	201,458
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross	9,302	9,332
Accumulated Amortization	(7,983)	(7,351)
Finite-Lived Intangible Assets, Net	1,319	1,981
Trade names and licenses
Finite-Lived Intangible Assets [Line Items]
Gross	102,297	93,497
Accumulated Amortization	(27,773)	(18,666)
Finite-Lived Intangible Assets, Net	$ 74,524	$ 74,831