Fair Value Measurements (Details) (USD $)	3 Months Ended																																				3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2014 U.S. Treasury and other U.S. government obligations	Dec. 31, 2013 U.S. Treasury and other U.S. government obligations	Mar. 31, 2014 Government sponsored enterprise obligations	Dec. 31, 2013 Government sponsored enterprise obligations	Mar. 31, 2014 Mortgage-backed securities - government agencies	Dec. 31, 2013 Mortgage-backed securities - government agencies	Mar. 31, 2014 Obligations of states and political subdivisions	Dec. 31, 2013 Obligations of states and political subdivisions	Mar. 31, 2014 Corporate equity securities	Mar. 31, 2014 Mortgage Servicing Rights (MSR)	Dec. 31, 2013 Mortgage Servicing Rights (MSR)	Mar. 31, 2014 Recurring basis Fair value	Dec. 31, 2013 Recurring basis Fair value	Mar. 31, 2014 Recurring basis Level 1	Mar. 31, 2014 Recurring basis Level 2	Dec. 31, 2013 Recurring basis Level 2	Mar. 31, 2014 Recurring basis U.S. Treasury and other U.S. government obligations Fair value	Dec. 31, 2013 Recurring basis U.S. Treasury and other U.S. government obligations Fair value	Mar. 31, 2014 Recurring basis U.S. Treasury and other U.S. government obligations Level 2	Dec. 31, 2013 Recurring basis U.S. Treasury and other U.S. government obligations Level 2	Mar. 31, 2014 Recurring basis Government sponsored enterprise obligations Fair value	Dec. 31, 2013 Recurring basis Government sponsored enterprise obligations Fair value	Mar. 31, 2014 Recurring basis Government sponsored enterprise obligations Level 2	Dec. 31, 2013 Recurring basis Government sponsored enterprise obligations Level 2	Mar. 31, 2014 Recurring basis Mortgage-backed securities - government agencies Fair value	Dec. 31, 2013 Recurring basis Mortgage-backed securities - government agencies Fair value	Mar. 31, 2014 Recurring basis Mortgage-backed securities - government agencies Level 2	Dec. 31, 2013 Recurring basis Mortgage-backed securities - government agencies Level 2	Mar. 31, 2014 Recurring basis Obligations of states and political subdivisions Fair value	Dec. 31, 2013 Recurring basis Obligations of states and political subdivisions Fair value	Mar. 31, 2014 Recurring basis Obligations of states and political subdivisions Level 2	Dec. 31, 2013 Recurring basis Obligations of states and political subdivisions Level 2	Mar. 31, 2014 Recurring basis Corporate equity securities Fair value	Mar. 31, 2014 Recurring basis Corporate equity securities Level 1	Mar. 31, 2014 Non-recurring basis	Mar. 31, 2013 Non-recurring basis	Mar. 31, 2014 Non-recurring basis Fair value	Dec. 31, 2013 Non-recurring basis Fair value	Mar. 31, 2014 Non-recurring basis Level 3	Dec. 31, 2013 Non-recurring basis Level 3
Assets
Investment securities available for sale	$ 440,184,000	$ 490,031,000	$ 40,000,000	$ 110,000,000	$ 156,357,000	$ 137,845,000	$ 173,280,000	$ 172,693,000	$ 69,505,000	$ 69,493,000	$ 1,042,000			$ 440,184,000	$ 490,031,000	$ 1,042,000	$ 439,142,000	$ 490,031,000	$ 40,000,000	$ 110,000,000	$ 40,000,000	$ 110,000,000	$ 156,357,000	$ 137,845,000	$ 156,357,000	$ 137,845,000	$ 173,280,000	$ 172,693,000	$ 173,280,000	$ 172,693,000	$ 69,505,000	$ 69,493,000	$ 69,505,000	$ 69,493,000	$ 1,042,000	$ 1,042,000
Interest rate swaps														379,000	299,000		379,000	299,000
Total assets														440,563,000	490,330,000	1,042,000	439,521,000	490,330,000
Liabilities
Interest rate swaps														322,000	275,000		322,000	275,000
Fair Value Measurements
Other real estate owned	2,933,000	5,590,000
Impaired loans with a valuation allowance	8,368,000	10,580,000
Amount of valuation allowance	1,267,000	1,452,000										0	0
Impaired loans	7,100,000	9,100,000																																					7,102,000	9,128,000	7,102,000	9,128,000
Losses																																					(180,000)	(928,000)
Level 1 to Level 2 transfer, assets	0
Level 2 to Level 1 transfer, assets	0
Level 1 to Level 2 transfer, liabilities	0
Level 2 to Level 1 transfer, liabilities	0
Transfers into/out of Level 3, assets	0
Transfers into/out of Level 3, liabilities	$ 0