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Borrowed Funds (Short-term borrowings) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Maximum Month End Balance	$ 40,346	$ 58,464	$ 40,346	$ 58,464
Average Balance	$ 34,886	$ 53,846	$ 34,608	$ 55,051
Weighted Average Interest Rate During the Period	0.09%	0.13%	0.14%	0.13%
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Maximum Month End Balance	$ 0	$ 3,815	$ 16,200	$ 5,965
Average Balance	$ 1,375	$ 1,474	$ 5,000	$ 3,280
Weighted Average Interest Rate During the Period	1.90%	1.20%	2.52%	1.13%
Federal Reserve Bank Advances [Member]
Short-term Debt [Line Items]
Maximum Month End Balance	$ 0	$ 0	$ 0	$ 0
Average Balance	$ 0	$ 82	$ 0	$ 57
Weighted Average Interest Rate During the Period	0.00%	1.60%	0.00%	1.54%

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- Definition

Short term debt weighted average interest rates.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(19))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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