Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2012 Impaired Loans Gross [Member]		Sep. 30, 2012 Impairment allocation [Member]		Sep. 30, 2012 Impaired Loans Net [Member]		Sep. 30, 2012 Other Real Estate Owned Fair Value Disclosure [Member]	Sep. 30, 2012 Recurring [Member]	Dec. 31, 2011 Recurring [Member]	Sep. 30, 2012 Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	Dec. 31, 2011 Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	Sep. 30, 2012 Recurring [Member] Significant Other Observable Inputs (Level 2) [Member]	Dec. 31, 2011 Recurring [Member] Significant Other Observable Inputs (Level 2) [Member]	Sep. 30, 2012 Recurring [Member] Significant Unobservable Inputs (Level 3) [Member]	Dec. 31, 2011 Recurring [Member] Significant Unobservable Inputs (Level 3) [Member]	Sep. 30, 2012 Nonrecurring [Member]	Dec. 31, 2011 Nonrecurring [Member]	Sep. 30, 2012 Nonrecurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	Dec. 31, 2011 Nonrecurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]	Sep. 30, 2012 Nonrecurring [Member] Significant Other Observable Inputs (Level 2) [Member]	Dec. 31, 2011 Nonrecurring [Member] Significant Other Observable Inputs (Level 2) [Member]	Sep. 30, 2012 Nonrecurring [Member] Significant Unobservable Inputs (Level 3) [Member]	Dec. 31, 2011 Nonrecurring [Member] Significant Unobservable Inputs (Level 3) [Member]
Financial assets and liabilities measured at fair value on a recurring basis [Abstract]
U.S. Treasury									$ 2,092	$ 2,150	$ 0	$ 0	$ 2,092	$ 2,150	$ 0	$ 0
U.S. Government agencies and corporations									127,619	96,003	0	0	127,619	96,003	0	0
State and political subdivisions									40,256	49,122	0	0	40,256	49,122	0	0
Mortgage-backed Securities									5,297	7,725	0	0	5,297	7,725	0	0
Corporate debt securities									18,688	16,077	0	0	18,688	16,077	0	0
Other securities									2,439	2,175	0	0	2,439	2,175	0	0
Total Securities Available for Sale									196,391	173,252	0	0	196,391	173,252	0	0
Period of appraisal of real estate property	12 months
Impaired loans and OREO measured at fair value on nonrecurring basis [Abstract]
Impaired loans net of valuation allowance																	575	5,968	0	0	0	0	575	5,968
Other real estate owned net of valuation allowance																	1,894	1,489	0	0	0	0	1,894	1,489
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Carrying Value, beginning of period		7,091		(1,123)		5,968		1,489
Additions		1,846		(272)		1,574		1,608
Deletions due to Foreclosure		(2,222)		449		(1,773)
Sale of Property								(1,144)
Change in Balance/ Valuation Allowance		(555)	[1]	163	[1]	(392)	[1]	(59)
Impaired Loans Removed from Level 3		(5,258)	[2]	456	[2]	(4,802)	[2]
Carrying Value, end of period		$ 902		$ (327)		$ 575		$ 1,894

[1] The reported amounts represent changes in the balance due to principal payments by borrowers.

[2] The reported amount represents loans that were valued using Level 3 inputs as of December 31, 2011 that no longer have impairment allocations based on Level 3 valuation, or for which Level 3 impairment allocations were reduced due to a updated valuation analysis.