Fair Value (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	$ 824,597	$ 812,611
Loans Held-for-Sale	8,586	4,263
Derivative Assets	1,377	1,713
Derivative Liabilities	1,471	1,734
Obligations of State and Political Subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	292,317	294,533
MBS/CMO - Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	532,280	518,078
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
Loans Held-for-Sale	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| Obligations of State and Political Subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) \| MBS/CMO - Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	0	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	820,085	807,620
Loans Held-for-Sale	8,586	4,263
Derivative Assets	1,377	1,713
Derivative Liabilities	1,471	1,734
Significant Other Observable Inputs (Level 2) \| Obligations of State and Political Subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	287,805	289,542
Significant Other Observable Inputs (Level 2) \| MBS/CMO - Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	532,280	518,078
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	4,512	4,991
Loans Held-for-Sale	0	0
Derivative Assets	0	0
Derivative Liabilities	0	0
Significant Unobservable Inputs (Level 3) \| Obligations of State and Political Subdivisions
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	4,512	4,991
Significant Unobservable Inputs (Level 3) \| MBS/CMO - Residential
Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]
Securities	$ 0	$ 0

Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items]

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4B
-Subparagraph (c)(2)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959

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- Definition

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

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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- Definition

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

+ References

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