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Borrowed Funds (Maturity and weighted average interest rates of FHLB advances) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Federal Home Loan Bank, Advances [Line Items]    
FHLB advances $ 245,000 $ 300,000
FHLB advances, rate 2.32% 2.20%
Fixed Rate Advances Due 2019 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB fixed rate advances $ 0 $ 100,000
FHLB advances, rate 0.00% 1.94%
Fixed Rate Advances Due 2020 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB fixed rate advances $ 55,000 $ 55,000
FHLB advances, rate 2.18% 2.18%
Fixed Rate Advances Due 2021 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB fixed rate advances $ 50,000 $ 50,000
FHLB advances, rate 1.91% 1.91%
Federal Home Loan Bank, Advances, Variable Rate Due 2021 [Member] [Member] [Member]    
Federal Home Loan Bank, Advances [Line Items]    
Federal Home Loan Bank, Advances, Floating Rate [1] $ 10,000 $ 10,000
FHLB advances, rate [1] 2.20% 2.93%
Federal Home Loan Bank, Advances, Fixed Rate Due 2022 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB fixed rate advances $ 20,000 $ 20,000
FHLB advances, rate 1.97% 1.97%
Fixed Rate Advances Due 2023 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB fixed rate advances $ 45,000 $ 35,000
FHLB advances, rate 2.97% 3.17%
Federal Home Loan Bank, Advances, Fixed Rate Due 2024 [Member] [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB fixed rate advances $ 55,000 $ 20,000
FHLB advances, rate 2.68% 2.96%
Federal Home Loan Bank, Advances, Fixed Rate Due 2026 [Member]    
Federal Home Loan Bank, Advances [Line Items]    
FHLB fixed rate advances $ 10,000 $ 10,000
FHLB advances, rate 1.17% 1.17%
[1] Hedged advance (see “Derivative Instruments” section below)