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Borrowed Funds (Summary of Short Term Borrowings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Short-term Debt [Line Items]
Overnight borrowings, interest rate	2.70%
Outstanding at end of year	$ 37,707	$ 48,845
Weighted average interest rate at year end	0.24%	0.15%
Maximum amount outstanding as of any month end	$ 55,648	$ 58,438
Average amount outstanding	$ 44,045	$ 37,326
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Approximate weighted average rate during the period	0.20%	0.19%
Short-term FHLB Advance [Member]
Short-term Debt [Line Items]
Overnight borrowings	$ 40,000	$ 0

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Weighted average interest rate of debt outstanding.

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Amount of advances from the Federal Home Loan Bank (FHLB).

+ References

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-Topic 942
-SubTopic 470
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Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Weighted average interest rate of short-term debt outstanding calculated at point in time.

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For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period.

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For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, maximum month-end borrowings during the period.

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