Impaired Loans and Allowance for Loan Losses (Details 1) (Residential real estate [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2012 Contract
Residential real estate [Member]
Troubled debt restructurings defaulted
Number of Contracts	7
Recorded Investment	$ 913

Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 34

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953682-111524

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