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Investments in Affiliates (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Sep. 30, 2015
Sep. 30, 2014
Schedule of Investments [Line Items]        
Equity in earnings of affiliates, net of tax $ 3,497 $ 4,032 $ 11,931 $ 10,289
Noncontrolling Interest, Ownership Percentage by Parent 60.00%   60.00%  
Joint Venture Loan Originations Products and Services [Member]        
Schedule of Investments [Line Items]        
Revenue from Related Parties $ 4,800 5,500 $ 14,200 14,400
Costs and Expenses, Related Party $ 3,200 $ 3,300 $ 9,700 $ 9,500
Ownership percentage in joint venture 50.10%   50.10%  
Joint venture investment percentage of income in equity earnings of affiliates 80.20% 76.50% 83.50% 81.60%
RELS Reporting Services, LLC [Member]        
Schedule of Investments [Line Items]        
Noncontrolling Interest, Ownership Percentage by Parent 100.00%   100.00%