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Borrowed Funds (Maturity and weighted average interest rates of FHLB advances) (Details) - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Federal Home Loan Bank, Advances [Line Items]
FHLB advances		$ 300,000	$ 290,000
FHLB advances, rate		2.20%	1.94%
Fixed Rate Advances Due 2018 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB fixed rate advances		$ 0	$ 70,000
FHLB advances, rate		0.00%	1.96%
Fixed Rate Advances Due 2019 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB fixed rate advances		$ 100,000	$ 85,000
FHLB advances, rate		1.94%	1.87%
Fixed Rate Advances Due 2020 [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB fixed rate advances		$ 55,000	$ 35,000
FHLB advances, rate		2.18%	1.80%
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]	2.93%	1.72%
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		$ 35,000	$ 10,000
FHLB advances, rate		3.17%	3.90%
Federal Home Loan Bank, Advances, Fixed Rate Due 2024 [Member] [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB fixed rate advances		$ 20,000	$ 0
FHLB advances, rate		2.96%	0.00%
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)

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- Definition

Par amount of advances made and reported by Federal Home Loan Bank (FHLBank) with fixed interest rate.

+ References

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- Definition

Par amount of advances made and reported by Federal Home Loan Bank (FHLBank) with floating interest rate.

+ References

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- Definition

Interest rate of advances made and reported by Federal Home Loan Bank (FHLBank).

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- Definition

Par amount of advances made and reported by Federal Home Loan Bank (FHLBank).

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