Loans and Leases (Troubled debt restructured loans) (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Receivables [Abstract]
Troubled debt restructured loans	$ 26,500,000	$ 25,600,000
Nonaccrual troubled debt restructured loans	2,074,000	4,481,000
Performing troubled debt restructured loans	$ 24,473,000	$ 21,121,000

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=6951948&loc=d3e18845-111554

Name:	us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant