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Borrowed Funds (Maturity and weighted average interest rates of FHLB advances) (Details) - USD ($)
$ in Thousands
Jun. 30, 2016
Dec. 31, 2015
Federal Home Loan Bank, Advances [Line Items]    
FHLB advances, rate 1.87% 1.93%
FHLB advances $ 265,000 $ 235,000
Fixed Rate Advances Due 2016 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB advances, rate 1.20% 1.25%
FHLB fixed rate advances $ 35,000 $ 30,000
Variable Rate Due 2016 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
Federal Home Loan Bank, Advances, Floating Rate $ 0 $ 15,000
FHLB advances, rate 0.00% 0.62%
Fixed Rate Advances Due 2017 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB advances, rate 1.56% 1.56%
FHLB fixed rate advances $ 50,000 $ 50,000
Fixed Rate Advances Due 2018 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB advances, rate 2.16% 2.16%
FHLB fixed rate advances $ 50,000 $ 50,000
Fixed Rate Advances Due 2019 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB advances, rate 1.99% 2.35%
FHLB fixed rate advances $ 60,000 $ 40,000
Fixed Rate Advances Due 2020 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB advances, rate 1.98% 1.98%
FHLB fixed rate advances $ 10,000 $ 10,000
Fixed Rate Advances Due 2021 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB advances, rate 2.01% 2.26%
FHLB fixed rate advances $ 40,000 $ 30,000
Fixed Rate Advances Due 2021 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
Federal Home Loan Bank, Advances, Floating Rate $ 10,000 $ 0
FHLB advances, rate 0.93% 0.00%
Fixed Rate Advances Due 2023 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB advances, rate 3.90% 3.90%
FHLB fixed rate advances $ 10,000 $ 10,000