Loans, Non-accrual and Past Due Loans (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	$ 5,237	$ 9,570
Age analysis of past due loans [Abstract]
30-59 Days Past Due	1,174	522
60-89 Days Past Due	1	445
90 Days or more Past Due	1,250	922
Total Past Due	2,425	1,889
Current	542,810	513,113
Total	545,235	515,002	448,228
Loans 90 days past due and still accruing	0	0
Commercial [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	2,151	2,609
Number of nonaccrual loans	7	9
Age analysis of past due loans [Abstract]
30-59 Days Past Due	0	200
60-89 Days Past Due	0	96
90 Days or more Past Due	82	269
Total Past Due	82	565
Current	120,669	110,079
Total	120,751	110,644	88,810
Commercial Real Estate [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	672	2,607
Number of nonaccrual loans	5	9
Age analysis of past due loans [Abstract]
30-59 Days Past Due	0	49
60-89 Days Past Due	0	341
90 Days or more Past Due	239	531
Total Past Due	239	921
Current	256,716	234,375
Total	256,955	235,296	188,426
Agriculture [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	0	1,590
Number of nonaccrual loans		3
Age analysis of past due loans [Abstract]
30-59 Days Past Due	0	0
60-89 Days Past Due	0	0
90 Days or more Past Due	0	0
Total Past Due	0	0
Current	61,144	51,730
Total	61,144	51,730	52,747
Residential Mortgage [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	1,691	2,166
Number of nonaccrual loans	6	7
Age analysis of past due loans [Abstract]
30-59 Days Past Due	1,172	207
60-89 Days Past Due	0	0
90 Days or more Past Due	457	99
Total Past Due	1,629	306
Current	48,882	52,503
Total	50,511	52,809	51,266
Residential Construction [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	71	93
Number of nonaccrual loans	2	2
Age analysis of past due loans [Abstract]
30-59 Days Past Due	0	40
60-89 Days Past Due	0	8
90 Days or more Past Due	0	0
Total Past Due	0	48
Current	5,963	10,396
Total	5,963	10,444	7,586
Consumer [Member]
Non-accrual and Past Due Loans [Abstract]
Non-accrual loans	652	505
Number of nonaccrual loans	5	5
Age analysis of past due loans [Abstract]
30-59 Days Past Due	2	26
60-89 Days Past Due	1	0
90 Days or more Past Due	472	23
Total Past Due	475	49
Current	49,436	54,030
Total	$ 49,911	$ 54,079	$ 59,393

The number of loans that are classified as non-accrual loans.

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- Definition

Financing receivables that are less than 60 days past due but more than 29 days past due.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7A

-URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953401-111524

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- Definition

Financing receivables that are less than 90 days past due but more than 59 days past due.

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- Definition

Recorded investment in financing receivables that are 90 days or more past due and still accruing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 7

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- Definition

Financing receivables that are current.

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- Definition

Financing receivables that are equal to or greater than 90 days past due.

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- Definition

Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date.

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Recorded Investment in financing receivables that are past due at the balance sheet date.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

+ References

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-Topic 310

-SubTopic 10

-Section 45

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