Loans, Part IV (Details) (USD $)	Dec. 31, 2012 Contract Loan	Dec. 31, 2011 Loan Contract
Troubled Debt Restructurings [Abstract]
Number of Contracts	28	11
Pre-Modification Outstanding Recorded Investment	$ 4,624,000	$ 6,765,000
Post-Modification Outstanding Recorded Investment	4,560,000	5,409,000
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	4
Recorded Investment	0	544,000
Number of restructured loans	58	41
Total restructured loans	16,800,000	19,000,000
Additional obligations	0
Commercial and Business Loans [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	3	5
Pre-Modification Outstanding Recorded Investment	320,000	2,240,000
Post-Modification Outstanding Recorded Investment	303,000	2,041,000
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	2
Recorded Investment	0	132,000
Government Program Loans [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	1	0
Pre-Modification Outstanding Recorded Investment	103,000	0
Post-Modification Outstanding Recorded Investment	88,000	0
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	0
Recorded Investment	0	0
Commercial Real Estate Loans [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	4	1
Pre-Modification Outstanding Recorded Investment	2,535,000	1,406,000
Post-Modification Outstanding Recorded Investment	2,506,000	1,249,000
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	0
Recorded Investment	0	0
Residential Mortgages [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	2	3
Pre-Modification Outstanding Recorded Investment	324,000	2,989,000
Post-Modification Outstanding Recorded Investment	323,000	2,104,000
Single Family Residential Loans [Member]
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	1
Recorded Investment	0	327,000
Home Improvement and Home Equity Loans [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	1	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	0
Recorded Investment	0	0
RE Construction and Development Loans [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	14	0
Pre-Modification Outstanding Recorded Investment	1,130,000	0
Post-Modification Outstanding Recorded Investment	1,130,000	0
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	0
Recorded Investment	0	0
Agricultural Loans [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	2	0
Pre-Modification Outstanding Recorded Investment	192,000	0
Post-Modification Outstanding Recorded Investment	191,000	0
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	0
Recorded Investment	0	0
Consumer Loans [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	1	2
Pre-Modification Outstanding Recorded Investment	20,000	130,000
Post-Modification Outstanding Recorded Investment	19,000	15,000
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	1
Recorded Investment	0	85,000
Overdraft Protection Lines [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	0
Recorded Investment	0	0
Lease Financing [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Troubled debt restructuring that defaulted [Abstract]
Number of Contracts	0	0
Recorded Investment	$ 0	$ 0