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Allowance for Loan Losses (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans	$ 3,350	$ 5,859	$ 3,523	$ 9,165
Interest income recognized:
Interest income recognized on a cash basis on impaired loans				173
Commercial [Member]
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans		1,424	17	2,344
Interest income recognized:
Interest income recognized on a cash basis on impaired loans				20
Commercial loans secured by real estate [Member]
Average recorded investment in impaired loans and related interest income recognized
Average investment in impaired loans	3,350	4,435	3,506	6,821
Interest income recognized:
Interest income recognized on a cash basis on impaired loans				$ 153

X

- Definition

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

+ References

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

+ Details

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Period Type:	duration

X

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of interest income recognized on a cash-basis method of accounting that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

+ References

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)(3)

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

+ Details

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Period Type:	duration

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- Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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