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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Sep. 22, 2015
Loss Contingencies [Line Items]      
Derivative Liability, Notional Amount $ 137,192 $ 153,593 $ 100,000
Commitments to Complete Contracts in Process 2515    
Interest Rate Swap      
Loss Contingencies [Line Items]      
Derivative Liability, Notional Amount $ 100,000    
Mortgage Loans Held for Sale      
Loss Contingencies [Line Items]      
Guarantor Obligations, Recourse Provisions 1127