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Derivatives and Financial Instruments (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Jun. 30, 2015
USD ($)
Jun. 30, 2014
USD ($)
Mar. 31, 2014
USD ($)
swap
Derivative [Line Items]          
Number of interest rate swaps | swap         2
Not designated as hedges [Member]          
Derivative [Line Items]          
Gain (loss) recognized in income $ (57) $ 19 $ 14 $ 21  
Not designated as hedges [Member] | Mortgage loan rate lock commitments [Member]          
Derivative [Line Items]          
Gain (loss) recognized in income 4 1 (3) 3  
Not designated as hedges [Member] | Mortgage loan forward sales and MBS [Member]          
Derivative [Line Items]          
Gain (loss) recognized in income (61) 18 17 18  
Federal Home Loan Bank Advances [Member] | Interest Rate Swap [Member]          
Derivative [Line Items]          
Notional amount         $ 40,000
Federal Home Loan Bank Advances [Member] | Interest Rate Swap 1 [Member]          
Derivative [Line Items]          
Notional amount         20,000
Federal Home Loan Bank Advances [Member] | Interest Rate Swap 2 [Member]          
Derivative [Line Items]          
Notional amount         $ 20,000
Federal Home Loan Bank Advances [Member] | Designated as hedging instrument [Member] | Interest Rate Swap [Member]          
Derivative [Line Items]          
Gain (loss) recognized in income $ 262 $ 0 $ (59) $ 0