Other Identifiable Intangible Assets, Net (Table) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross	$ 786,245	$ 607,791
Accumulated Amortization	(307,332)	(255,643)
Finite-Lived Intangible Assets, Net	478,913	352,148
Client lists
Finite-Lived Intangible Assets [Line Items]
Gross	637,053	496,192
Accumulated Amortization	(257,787)	(219,887)
Finite-Lived Intangible Assets, Net	379,266	276,305
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross	28,106	9,302
Accumulated Amortization	(11,136)	(7,983)
Finite-Lived Intangible Assets, Net	16,970	1,319
Trade names and licenses
Finite-Lived Intangible Assets [Line Items]
Gross	121,086	102,297
Accumulated Amortization	(38,409)	(27,773)
Finite-Lived Intangible Assets, Net	$ 82,677	$ 74,524