Fair Value Measurement, Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Assets available for sale securities [Abstract]
Total Available-for-Sale, Fair Value	$ 55,202	$ 53,571
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets available for sale securities [Abstract]
Total Available-for-Sale, Fair Value	361	349
Interest rate swaps	0	0
Total assets at fair value	52,547	71,546
Liabilities [Abstract]
Interest rate swaps	0	0
Total liabilities at fair value	0	0
Significant Other Observable Inputs (Level 2) [Member]
Assets available for sale securities [Abstract]
Total Available-for-Sale, Fair Value	54,841	53,222
Interest rate swaps	37	96
Total assets at fair value	500,502	513,368
Liabilities [Abstract]
Interest rate swaps	321	223
Total liabilities at fair value	526,218	558,888
Significant Other Unobservable Inputs (Level 3) [Member]
Assets available for sale securities [Abstract]
Total Available-for-Sale, Fair Value	0	0
Interest rate swaps	0	0
Total assets at fair value	111	163
Liabilities [Abstract]
Interest rate swaps	0	0
Total liabilities at fair value	0	0
Fair Value, Measurements, Recurring [Member]
Assets available for sale securities [Abstract]
Obligations of U.S. Government corporations and agencies	44,550	43,937
Obligations of states and political subdivisions	7,191	7,035
Corporate bonds	3,100	2,250
Mutual funds	361	349
Total Available-for-Sale, Fair Value	55,202	53,571
Interest rate swaps	37	96
Total assets at fair value	55,239	53,667
Liabilities [Abstract]
Interest rate swaps	321	223
Total liabilities at fair value	321	223
Fair Value, Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets available for sale securities [Abstract]
Obligations of U.S. Government corporations and agencies	0	0
Obligations of states and political subdivisions	0	0
Corporate bonds	0	0
Mutual funds	361	349
Total Available-for-Sale, Fair Value	361	349
Interest rate swaps	0	0
Total assets at fair value	361	349
Liabilities [Abstract]
Interest rate swaps	0	0
Total liabilities at fair value	0	0
Fair Value, Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Assets available for sale securities [Abstract]
Obligations of U.S. Government corporations and agencies	44,550	43,937
Obligations of states and political subdivisions	7,191	7,035
Corporate bonds	3,100	2,250
Mutual funds	0	0
Total Available-for-Sale, Fair Value	54,841	53,222
Interest rate swaps	37	96
Total assets at fair value	54,878	53,318
Liabilities [Abstract]
Interest rate swaps	321	223
Total liabilities at fair value	321	223
Fair Value, Measurements, Recurring [Member] | Significant Other Unobservable Inputs (Level 3) [Member]
Assets available for sale securities [Abstract]
Obligations of U.S. Government corporations and agencies	0	0
Obligations of states and political subdivisions	0	0
Corporate bonds	0	0
Mutual funds	0	0
Total Available-for-Sale, Fair Value	0	0
Interest rate swaps	0	0
Total assets at fair value	0	0
Liabilities [Abstract]
Interest rate swaps	0	0
Total liabilities at fair value	0	0
Fair Value, Measurements, Nonrecurring [Member]
Financial Assets Measured at Fair Value on a Nonrecurring Basis [Abstract]
Impaired loans, net	6,480	3,911
Other real estate owned, net	1,406	4,085
Fair Value, Measurements, Nonrecurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Financial Assets Measured at Fair Value on a Nonrecurring Basis [Abstract]
Impaired loans, net	0	0
Other real estate owned, net	0	0
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Observable Inputs (Level 2) [Member]
Financial Assets Measured at Fair Value on a Nonrecurring Basis [Abstract]
Impaired loans, net	6,369	3,748
Other real estate owned, net	1,406	4,085
Fair Value, Measurements, Nonrecurring [Member] | Significant Other Unobservable Inputs (Level 3) [Member]
Financial Assets Measured at Fair Value on a Nonrecurring Basis [Abstract]
Impaired loans, net	111	163
Other real estate owned, net	$ 0	$ 0