Fair Value of Financial Instruments - Quantitative Information (Details) (Significant Unobservable Inputs Level 3 [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2013
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 Liquidation expenses (in hundredths)	0.00%	[1]
Minimum [Member] | Impaired loans and leases [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Range (Weighted Average) of Liquidation expenses (in hundredths)	(16.40%)	[1]
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 Liquidation expenses (in hundredths)	(8.10%)	[1]
Appraisal of collateral valuation technique [Member] | Other real estate owned [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Assets, Fair Value	$ 4,585
Appraisal of collateral valuation technique [Member] | Impaired loans and leases [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Assets, Fair Value	7,601
Appraisal of collateral valuation technique [Member] | 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)	0.00%	[1]
Appraisal of collateral valuation technique [Member] | 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)	0.00%	[1]
Appraisal of collateral valuation technique [Member] | Minimum [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)	(81.10%)	[1]
Appraisal of collateral valuation technique [Member] | Minimum [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)	(15.80%)	[1]
Appraisal of collateral valuation technique [Member] | 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)	(5.40%)	[1]
Appraisal of collateral valuation technique [Member] | 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)	(11.90%)	[1]
Salvageable value of collateral valuation technique [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Range (Weighted Average) of Salvageable value of collateral (in hundredths)	0.00%	[2]
Sales prices [Member] | Loans and leases held for sale [Member]
Additional quantitative information about assets measured at fair value on a nonrecurring basis [Abstract]
Assets, Fair Value	$ 1,419
Range (Weighted Average) of Liquidation expenses (in hundredths)	(14.00%)

[1] Appraisals may be adjusted for qualitative factors such as interior condition of the property and liquidation expenses. Fair value may also be based on negotiated settlements with the borrower.

[2] Leases are measured using the salvageable value of the collateral.