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Business Segment Reporting - Schedule of Depreciation and Amortization by Segment (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Segment Reporting Information [Line Items]    
Depreciation expense $ 8,551 $ 6,527
Amortization of debt discount 351 264
Amortization of debt issuance costs 700 656
Servicing [Member]    
Segment Reporting Information [Line Items]    
Depreciation expense 806 1,358
Amortization of debt discount 0 0
Amortization of debt issuance costs 0 0
Lending [Member]    
Segment Reporting Information [Line Items]    
Depreciation expense 36 29
Amortization of debt discount 0 0
Amortization of debt issuance costs 0 0
Corporate Items and Other [Member]    
Segment Reporting Information [Line Items]    
Depreciation expense 7,709 5,140
Amortization of debt discount 351 264
Amortization of debt issuance costs $ 700 $ 656