Loans, Troubled Debt Restructurings Loans (Details) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Loans modified and considered troubled debt restructurings [Abstract]
Number	8	2
Pre-modification recorded investment	$ 8,324,000	$ 1,123,000
Post-modification recorded investment	8,324,000	1,123,000
Loans modified as troubled debt restructurings [Abstract]
Adjusted interest rate	725,000	1,123,000
Extended maturity	5,382,000	0
Combined rate and maturity	2,217,000	0
Loans modified and considered TDR included in nonaccrual	5,600,000
Loans modified and considered TDR classified non-performing	1,100,000
Commitments to lend additional funds to loan customers whose terms have been modified in troubled debt restructurings	0	0
Commercial [Member]
Loans modified and considered troubled debt restructurings [Abstract]
Number	1	0
Pre-modification recorded investment	2,255,000	0
Post-modification recorded investment	2,255,000	0
Loans modified as troubled debt restructurings [Abstract]
Adjusted interest rate	0	0
Extended maturity	2,255,000	0
Combined rate and maturity	0	0
Commercial mortgage [Member]
Loans modified and considered troubled debt restructurings [Abstract]
Number	3	1
Pre-modification recorded investment	3,156,000	759,000
Post-modification recorded investment	3,156,000	759,000
Loans modified as troubled debt restructurings [Abstract]
Adjusted interest rate	725,000	759,000
Extended maturity	214,000	0
Combined rate and maturity	2,217,000	0
Construction [Member]
Loans modified and considered troubled debt restructurings [Abstract]
Number	4	0
Pre-modification recorded investment	2,913,000	0
Post-modification recorded investment	2,913,000	0
Loans modified as troubled debt restructurings [Abstract]
Adjusted interest rate	0	0
Extended maturity	2,913,000	0
Combined rate and maturity	0	0
Residential mortgage [Member]
Loans modified and considered troubled debt restructurings [Abstract]
Number	0	1
Pre-modification recorded investment	0	364,000
Post-modification recorded investment	0	364,000
Loans modified as troubled debt restructurings [Abstract]
Adjusted interest rate	0	364,000
Extended maturity	0	0
Combined rate and maturity	$ 0	$ 0

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This line item represents amount of adjusted interest rate (after modification) modified by troubled debt restructurings.

+ References

No definition available.

+ Details

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- Definition

This line item represents amount of combined adjusted interest rate and extended maturity (after modification) modified by troubled debt restructurings.

+ References

No definition available.

+ Details

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- Definition

This line item represents amount of extended maturity (after modification) modified by troubled debt restructurings.

+ References

No definition available.

+ Details

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- Definition

This element represents loans modified and considered troubled debt restructured loans included in non-performing loans.

+ References

No definition available.

+ Details

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- Definition

This element represents loans modified and considered troubled debt restructured loans included in nonaccrual status.

+ References

No definition available.

+ Details

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- Definition

Number of financing receivables that have been 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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- Definition

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

+ References

+ Details

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- Definition

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

+ References

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- Definition

Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 40

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6951948&loc=d3e18794-111554

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 15

-Paragraph 40

-Subparagraph b.

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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