Loans, Loans Portfolio by Credit Quality Indicators (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Sep. 30, 2012
Financing Receivable, Recorded Investment [Line Items]
Total	$ 566,109	$ 453,783	$ 457,407
Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	31,246	26,210
Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	301,984	238,129
Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	216,558	175,269
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	13,018	10,631
Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	3,245	1,668
Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	58	1,876
Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	537,764	427,890
Pass [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	27,669	22,965
Pass [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	285,160	222,497
Pass [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	208,654	168,338
Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	12,978	10,549
Pass [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	3,245	1,665
Pass [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	58	1,876
OAEM [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	6,312	6,810
OAEM [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,815	1,804
OAEM [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	2,723	2,653
OAEM [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,774	2,353
OAEM [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
OAEM [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
OAEM [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	21,980	18,394
Substandard [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,762	1,177
Substandard [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	14,101	12,872
Substandard [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	6,077	4,280
Substandard [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	40	62
Substandard [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	3
Substandard [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	53	689
Doubtful [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	264
Doubtful [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	107
Doubtful [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	53	298
Doubtful [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	20
Doubtful [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
Doubtful [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0	0
Financial Receivable Acquired Credit Imparied [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	5,939
Financial Receivable Acquired Credit Imparied [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	341
Financial Receivable Acquired Credit Imparied [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	4,252
Financial Receivable Acquired Credit Imparied [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,346
Financial Receivable Acquired Credit Imparied [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	12
Financial Receivable Acquired Credit Imparied [Member] | Pass [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	12
Financial Receivable Acquired Credit Imparied [Member] | Pass [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Acquired Credit Imparied [Member] | Pass [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Acquired Credit Imparied [Member] | OAEM [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	766
Financial Receivable Acquired Credit Imparied [Member] | OAEM [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Acquired Credit Imparied [Member] | OAEM [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	766
Financial Receivable Acquired Credit Imparied [Member] | OAEM [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Acquired Credit Imparied [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	5,161
Financial Receivable Acquired Credit Imparied [Member] | Substandard [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	329
Financial Receivable Acquired Credit Imparied [Member] | Substandard [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	3,486
Financial Receivable Acquired Credit Imparied [Member] | Substandard [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,346
Financial Receivable Acquired Credit Imparied [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Acquired Credit Imparied [Member] | Doubtful [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Acquired Credit Imparied [Member] | Doubtful [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Acquired Credit Imparied [Member] | Doubtful [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	560,170
Financial Receivable Other [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	30,905
Financial Receivable Other [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	297,732
Financial Receivable Other [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	215,212
Financial Receivable Other [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	13,018
Financial Receivable Other [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	3,245
Financial Receivable Other [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	58
Financial Receivable Other [Member] | Pass [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	537,752
Financial Receivable Other [Member] | Pass [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	27,657
Financial Receivable Other [Member] | Pass [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	285,160
Financial Receivable Other [Member] | Pass [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	208,654
Financial Receivable Other [Member] | Pass [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	12,978
Financial Receivable Other [Member] | Pass [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	3,245
Financial Receivable Other [Member] | Pass [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	58
Financial Receivable Other [Member] | OAEM [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	5,546
Financial Receivable Other [Member] | OAEM [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,815
Financial Receivable Other [Member] | OAEM [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,957
Financial Receivable Other [Member] | OAEM [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,774
Financial Receivable Other [Member] | OAEM [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Other [Member] | OAEM [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Other [Member] | OAEM [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Other [Member] | Substandard [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	16,819
Financial Receivable Other [Member] | Substandard [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	1,433
Financial Receivable Other [Member] | Substandard [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	10,615
Financial Receivable Other [Member] | Substandard [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	4,731
Financial Receivable Other [Member] | Substandard [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	40
Financial Receivable Other [Member] | Substandard [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Other [Member] | Substandard [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Other [Member] | Doubtful [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	53
Financial Receivable Other [Member] | Doubtful [Member] | Commercial and Industrial [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Other [Member] | Doubtful [Member] | Commercial Secured By Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Other [Member] | Doubtful [Member] | Residential Real Estate [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	53
Financial Receivable Other [Member] | Doubtful [Member] | Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Other [Member] | Doubtful [Member] | Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	0
Financial Receivable Other [Member] | Doubtful [Member] | Other [Member]
Financing Receivable, Recorded Investment [Line Items]
Total	$ 0