Loans and Allowance (Commercial and Retail Credit Exposure Credit Risk Profile by Internal Rating) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 1,503,936	$ 1,497,256	$ 1,452,461
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	482,627	485,808
Commercial Real Estate [Member] | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	460,826	465,888
Commercial Real Estate [Member] | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	11,858	9,501
Commercial Real Estate [Member] | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	9,943	10,419
Commercial Segment [Member] | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	658,866	654,242
Commercial Segment [Member] | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	21,647	19,622
Commercial Segment [Member] | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	14,293	14,613
Commercial Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	60,383	53,310
Commercial Segment [Member] | Construction Loans [Member] | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	53,616	46,649
Commercial Segment [Member] | Construction Loans [Member] | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	6,228	6,112
Commercial Segment [Member] | Construction Loans [Member] | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	539	549
Commercial Segment [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	151,796	149,359
Commercial Segment [Member] | Commercial and Industrial [Member] | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	144,424	141,705
Commercial Segment [Member] | Commercial and Industrial [Member] | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Loans	3,561	4,009
Commercial Segment [Member] | Commercial and Industrial [Member] | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	3,811	3,645
Consumer [Member] | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	802,783	802,747
Consumer [Member] | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	6,347	6,032
Consumer [Member] | First Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	458,498	464,539
Consumer [Member] | First Mortgage [Member] | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	453,242	459,771
Consumer [Member] | First Mortgage [Member] | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	5,256	4,768
Consumer [Member] | Second Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	73,346	77,072
Consumer [Member] | Second Mortgage [Member] | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	73,092	76,752
Consumer [Member] | Second Mortgage [Member] | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	254	320
Consumer [Member] | Automobile Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	52,496	43,667
Consumer [Member] | Automobile Loan [Member] | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	52,387	43,559
Consumer [Member] | Automobile Loan [Member] | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	109	108
Consumer [Member] | Boat/RVs [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	218,175	216,608
Consumer [Member] | Boat/RVs [Member] | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	217,493	215,830
Consumer [Member] | Boat/RVs [Member] | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	682	778
Consumer [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	6,615	6,893
Consumer [Member] | Other [Member] | Pass
Financing Receivable, Recorded Investment [Line Items]
Loans	6,569	6,835
Consumer [Member] | Other [Member] | Substandard
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 46	$ 58