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Allowance for Loan Losses (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for Loan Losses (Textual) [Abstract]
Troubled debt restructurings (TDRs)	$ 6,300,000	$ 11,400,000
TDRs performing under the restructured terms	1,600,000	4,800,000
Troubled debt restructuring loan subsequent default	0
Non-accrual loans excluded from impaired loan disclosure	13,000	103,000	2,000
Interest accrued on loan	$ 1,000	$ 4,000	$ 0

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- Definition

Financing receivable non-accrual loans excluded from impaired loan disclosure.

+ References

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Financing receivable subsequent default recorded investment.

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Performing troubled debt restructurings.

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Amount of investment in financing receivables (before modification) modified by troubled debt restructurings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 33

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953676-111524

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Amount of interest income recognized 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)(2)

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

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