Property and Equipment, Net (Table) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 829,589	$ 827,110
Less: accumulated depreciation	(478,620)	(458,496)
Property and equipment, net	350,969	368,614
Land [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	4,000	4,000
Buildings [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	230	230
Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	81,503	91,397
Capitalized software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	714,109	701,482
Leasehold improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 29,747	$ 30,001