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Borrowed Funds and Debt Obligations - Narrative (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2015
USD ($)
Jun. 30, 2016
USD ($)
loan
Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
loan
Jun. 30, 2015
USD ($)
Dec. 31, 2015
loan
Debt Instrument [Line Items]            
Federal Home Loan Bank, number of variable rate advances (in loans) | loan   2   2   0
Issuance of common stock in private placement offering $ 76,000          
Gain on extinguishment of debt $ 1,800 $ 0 $ 0 $ 0 $ 1,750  
FHLB advance number one            
Debt Instrument [Line Items]            
Variable rate   0.25%   0.25%    
FHLB advance number two            
Debt Instrument [Line Items]            
Variable rate   0.25%   0.25%    
Minimum            
Debt Instrument [Line Items]            
Fixed interest rate of Federal Home Loan Bank advances   1.06%   1.06%   0.21%
Maximum            
Debt Instrument [Line Items]            
Fixed interest rate of Federal Home Loan Bank advances   2.46%   2.46%   3.64%