Fair Value of Financial Instruments - Quantitative Information (Details) - Appraisal of collateral valuation technique [Member] - Level 3 [Member] - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Impaired loans and leases [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Impaired Loans And Leases Fair Value	$ 2,729	$ 2,812
Other real estate owned [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Foreclosed Properties Valued On Nonrecurring Basis	$ 3,140	$ 3,418
Maximum [Member] | Impaired loans and leases [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Range (Weighted Average) of Appraisal adjustments (in hundredths)	(40.00%)	(20.00%)
Range (Weighted Average) of Liquidation expenses (in hundredths	(24.00%)	(24.00%)
Maximum [Member] | Other real estate owned [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Range (Weighted Average) of Appraisal adjustments (in hundredths)	(62.50%)	(68.60%)
Range (Weighted Average) of Liquidation expenses (in hundredths	(14.70%)	(14.70%)
Weighted Average [Member] | Impaired loans and leases [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Range (Weighted Average) of Appraisal adjustments (in hundredths)	(26.90%)	(20.00%)
Range (Weighted Average) of Liquidation expenses (in hundredths	(7.10%)	(7.80%)
Weighted Average [Member] | Other real estate owned [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Range (Weighted Average) of Appraisal adjustments (in hundredths)	(15.00%)	(14.50%)
Range (Weighted Average) of Liquidation expenses (in hundredths	(11.80%)	(14.70%)