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Property (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 4 years 11 months  
Property, Plant and Equipment, Gross $ 38,415 $ 142,625
Property at cost, net of depreciation 5,686 7,036
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment (32,729) (135,589)
Depreciation 2,200 5,900
Software and Software Development Costs [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 10,665 67,974
Furniture and Fixtures [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 6,037 7,250
Data Processing and Telephone Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross 11,064 39,340
Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Gross $ 10,649 $ 28,061