Loans, Major Classifications of Loans (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 685,281	$ 574,382
Deferred net origination costs (fees)	(85)	(28)
Balance, end of period	685,196	574,354	549,667
Less allowance for loan losses	3,370	3,588
Loans, net	681,826	570,766
Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	40,132	29,337
Balance, end of period	40,090	29,306	35,415
Commercial Secured By Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	376,110	314,252
Balance, end of period	375,720	313,913	282,844
Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	238,238	215,587
Balance, end of period	238,503	215,842	214,484
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	20,997	12,643
Balance, end of period	21,079	12,730	13,973
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	7,882	2,472
Balance, end of period	7,882	2,472	1,805
Other Loans Including Deposits Overdraft [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,922	91
Financial Receivable Acquired Credit Imparied [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	20,103	6,027
Deferred net origination costs (fees)	0	0
Balance, end of period	20,103	6,027
Less allowance for loan losses	0	0
Loans, net	20,103	6,027
Financial Receivable Acquired Credit Imparied [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	1,803	332
Balance, end of period	1,803	332
Financial Receivable Acquired Credit Imparied [Member] | Commercial Secured By Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	11,723	4,363
Balance, end of period	11,723	4,363
Financial Receivable Acquired Credit Imparied [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	6,116	1,332
Balance, end of period	6,116	1,332
Financial Receivable Acquired Credit Imparied [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	218	0
Balance, end of period	218
Financial Receivable Acquired Credit Imparied [Member] | Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	243	0
Balance, end of period	243
Financial Receivable Acquired Credit Imparied [Member] | Other Loans Including Deposits Overdraft [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	0	0
Financial Receivable Other [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	665,178	568,355
Deferred net origination costs (fees)	(85)	(28)
Balance, end of period	665,093	568,327
Less allowance for loan losses	3,370	3,588
Loans, net	661,723	564,739
Financial Receivable Other [Member] | Commercial and Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	38,329	29,005
Balance, end of period	38,287	28,974
Financial Receivable Other [Member] | Commercial Secured By Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	364,387	309,889
Balance, end of period	363,997	309,550
Financial Receivable Other [Member] | Residential Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	232,122	214,255
Balance, end of period	232,387	214,510
Financial Receivable Other [Member] | Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	20,779	12,643
Balance, end of period	20,861	12,730
Financial Receivable Other [Member] | Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	7,639	2,472
Balance, end of period	7,639	2,472
Financial Receivable Other [Member] | Other Loans Including Deposits Overdraft [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, gross	$ 1,922	$ 91