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Goodwill and Intangible Assets, Net Amoritzation Expense on Intangibles (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]          
Amortization expense $ 3,702 $ 7,922 $ 14,246 $ 31,319  
Impairment of goodwill $ 0   $ 0    
Luxury Mortgage Corp          
Finite-Lived Intangible Assets [Line Items]          
Impairment of goodwill         $ 699