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Fair Value of Financial Instruments - Unobservable (Level 3) Inputs (Details) - IRLCs - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
IRLCs, Fair Value $ 582 $ 521
Significant Unobservable Inputs (Level 3)    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
Other securities, Valuation Technique Discounted cash flow  
Other securities, Unobservable Inputs Loan closing rates  
IRLCs, Fair Value $ 582 $ 521
Significant Unobservable Inputs (Level 3) | Minimum    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
IRLC, Range, Loan closing rates (as a percent) 43.00% 40.00%
Significant Unobservable Inputs (Level 3) | Maximum    
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]    
IRLC, Range, Loan closing rates (as a percent) 100.00% 95.00%