Fair Value Measurement, Assets and Liabilities Measured at Fair Value on Recurring and Nonrecurring Basis (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Assets available for sale securities [Abstract]
Total Available-for-Sale, Fair Value	$ 57,742	$ 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	360	349
Interest rate swaps	0	0
Total assets at fair value	59,300	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	57,382	53,222
Interest rate swaps	36	96
Total assets at fair value	506,859	513,368
Liabilities [Abstract]
Interest rate swaps	387	223
Total liabilities at fair value	541,623	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	102	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	47,212	43,937
Obligations of states and political subdivisions	7,175	7,035
Corporate bonds	2,995	2,250
Mutual funds	360	349
Total Available-for-Sale, Fair Value	57,742	53,571
Interest rate swaps	36	96
Total assets at fair value	57,778	53,667
Liabilities [Abstract]
Interest rate swaps	387	223
Total liabilities at fair value	387	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	360	349
Total Available-for-Sale, Fair Value	360	349
Interest rate swaps	0	0
Total assets at fair value	360	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	47,212	43,937
Obligations of states and political subdivisions	7,175	7,035
Corporate bonds	2,995	2,250
Mutual funds	0	0
Total Available-for-Sale, Fair Value	57,382	53,222
Interest rate swaps	36	96
Total assets at fair value	57,418	53,318
Liabilities [Abstract]
Interest rate swaps	387	223
Total liabilities at fair value	387	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	4,886	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	4,784	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	102	163
Other real estate owned, net	$ 0	$ 0