Credit Quality and Related Allowance for Loan Losses (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014 contract	Sep. 30, 2013 contract	Sep. 30, 2014 contract	Sep. 30, 2013 contract	Dec. 31, 2013
Troubled debt restructurings
Reasonable period for classification of troubled debt restructuring nonperforming loans to performing status			6 months
Number of Contracts	7	2	7	6
Pre-Modification Outstanding Recorded Investment	$ 1,361	$ 1,634	$ 1,361	$ 1,959
Post-Modification Outstanding Recorded Investment	1,361	1,634	1,361	1,959
Troubled debt restructurings	12,558		12,558		11,472
Commercial and agricultural
Troubled debt restructurings
Number of Contracts	3	0	3	0
Pre-Modification Outstanding Recorded Investment	620	0	620	0
Post-Modification Outstanding Recorded Investment	620	0	620	0
Residential
Troubled debt restructurings
Number of Contracts	1	0	1	2
Pre-Modification Outstanding Recorded Investment	105	0	105	61
Post-Modification Outstanding Recorded Investment	105	0	105	61
Commercial
Troubled debt restructurings
Number of Contracts	3	2	3	4
Pre-Modification Outstanding Recorded Investment	636	1,634	636	1,898
Post-Modification Outstanding Recorded Investment	636	1,634	636	1,898
Number of contracts defaulted			1
Recorded investment			$ 122