Fair Value (Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Assets:
Securities	$ 740,994	$ 709,786
Loans Held-for-Sale	6,719	15,273
Derivative Assets	1,564	1,291
Mortgage Servicing Rights	547	611
Derivative Liabilities	1,633	1,238
Obligations of State and Political Subdivisions
Assets:
Securities	273,309	247,519
MBS/CMO – Residential
Assets:
Securities	467,332	461,914
Equity Securities
Assets:
Securities	353	353
Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets:
Securities	0	0
Loans Held-for-Sale	0	0
Derivative Assets	0	0
Mortgage Servicing Rights	0	0
Derivative Liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Obligations of State and Political Subdivisions
Assets:
Securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| MBS/CMO – Residential
Assets:
Securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Equity Securities
Assets:
Securities	0	0
Significant Other Observable Inputs (Level 2)
Assets:
Securities	734,992	702,409
Loans Held-for-Sale	6,719	15,273
Derivative Assets	1,564	1,291
Mortgage Servicing Rights	547	611
Derivative Liabilities	1,633	1,238
Significant Other Observable Inputs (Level 2) \| Obligations of State and Political Subdivisions
Assets:
Securities	267,660	240,495
Significant Other Observable Inputs (Level 2) \| MBS/CMO – Residential
Assets:
Securities	467,332	461,914
Significant Other Observable Inputs (Level 2) \| Equity Securities
Assets:
Securities	0	0
Significant Unobservable Inputs (Level 3)
Assets:
Securities	6,002	7,377
Loans Held-for-Sale	0	0
Derivative Assets	0	0
Mortgage Servicing Rights	0	0
Derivative Liabilities	0	0
Significant Unobservable Inputs (Level 3) \| Obligations of State and Political Subdivisions
Assets:
Securities	5,649	7,024
Significant Unobservable Inputs (Level 3) \| MBS/CMO – Residential
Assets:
Securities	0	0
Significant Unobservable Inputs (Level 3) \| Equity Securities
Assets:
Securities	$ 353	$ 353

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Fair value as of the balance sheet date of all derivative assets not designated as hedging instruments.

+ References

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-Publisher FASB
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-Topic 815
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Fair value as of the balance sheet date of all derivative liabilities not designated as hedging instruments.

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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