Loans Loans Modified in Trouble Debt Restructurings (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Modifications [Line Items]
Number of Loans	19	17
Pre-Modification Outstanding Recorded Investment	$ 207	$ 1,343
Post-Modification Outstanding Recorded Investment	207	1,343
Subsequent Default, Number of Contracts	0	0
Subsequent Default, Recorded Investment	0	0
Commitments to lend additional funds to modified loans	0	0
Commercial [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	1
Pre-Modification Outstanding Recorded Investment	0	63
Post-Modification Outstanding Recorded Investment	0	63
Subsequent Default, Number of Contracts	0	0
Subsequent Default, Recorded Investment	0	0
Commitments to lend additional funds to modified loans	0	0
Commercial Construction [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Subsequent Default, Number of Contracts	0	0
Subsequent Default, Recorded Investment	0	0
Commitments to lend additional funds to modified loans	0	0
Commercial Real Estate [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	2	1
Pre-Modification Outstanding Recorded Investment	47	917
Post-Modification Outstanding Recorded Investment	47	917
Subsequent Default, Number of Contracts	0	0
Subsequent Default, Recorded Investment	0	0
Commitments to lend additional funds to modified loans	0	0
Other Consumer [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	0
Pre-Modification Outstanding Recorded Investment	0	0
Post-Modification Outstanding Recorded Investment	0	0
Subsequent Default, Number of Contracts	0	0
Subsequent Default, Recorded Investment	0	0
Commitments to lend additional funds to modified loans	0	0
Automobile [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	17	14
Pre-Modification Outstanding Recorded Investment	160	121
Post-Modification Outstanding Recorded Investment	160	121
Subsequent Default, Number of Contracts	0	0
Subsequent Default, Recorded Investment	0	0
Commitments to lend additional funds to modified loans	0	0
Residential [Member]
Financing Receivable, Modifications [Line Items]
Number of Loans	0	1
Pre-Modification Outstanding Recorded Investment	0	242
Post-Modification Outstanding Recorded Investment	0	242
Subsequent Default, Number of Contracts	0	0
Subsequent Default, Recorded Investment	0	0
Commitments to lend additional funds to modified loans	$ 0	$ 0

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

+ References

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- Definition

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

+ References

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.

+ References

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

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

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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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