Loans and Leases (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2013	Mar. 31, 2012
Average recorded investment in impaired loans
Average investment in impaired loans	$ 3,334	$ 3,788
Commercial and Other Loans [Member]
Average recorded investment in impaired loans
Average investment in impaired loans	30	35
Commercial real estate [Member]
Average recorded investment in impaired loans
Average investment in impaired loans	3,081	3,180
Consumer real estate [Member]
Average recorded investment in impaired loans
Average investment in impaired loans	$ 223	$ 573

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5258-111524

Name:	us-gaap_ImpairedFinancingReceivableAverageRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration