Fair Value of Assets and Liabilities (Details 1) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Collateral-dependent impaired loans, net of ALLL	$ 19,039
Fair Value, Measurements, Nonrecurring [Member]
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	5,459	13,983
Collateral-dependent impaired loans, net of ALLL	19,039	22,966
Total assets measured at fair value on a non-recurring basis	24,498	36,949
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	0	0
Collateral-dependent impaired loans, net of ALLL	0	0
Total assets measured at fair value on a non-recurring basis	0	0
Significant Other Observable Inputs (Level 2) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	0	0
Collateral-dependent impaired loans, net of ALLL	0	0
Total assets measured at fair value on a non-recurring basis	0	0
Significant Unobservable Inputs (Level 3) [Member] | Fair Value, Measurements, Nonrecurring [Member]
Assets with a recorded change resulting from re-measuring at fair value on a non-recurring basis
Other real estate owned	5,459	13,983
Collateral-dependent impaired loans, net of ALLL	19,039	22,966
Total assets measured at fair value on a non-recurring basis	$ 24,498	$ 36,949