Fair Value Measurements (Details 2) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2012
Impaired loans Assets [Member]
Quantitative information about Level 3 Fair Value Measurements
Fair Value Measurements, Valuation Techniques	Discounted appraised value
Impaired loans Assets [Member] \| Fair Value, Measurements, Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Quantitative information about Level 3 Fair Value Measurements
Fair value assets	8,513
Fair Value inputs, Discount rate	10.00%
Other real estate owned [Member]
Quantitative information about Level 3 Fair Value Measurements
Fair Value Measurements, Valuation Techniques	Discounted appraised value
Other real estate owned [Member] \| Fair Value, Measurements, Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Quantitative information about Level 3 Fair Value Measurements
Fair value assets	5,323
Fair Value inputs, Discount rate	7.00%
Maximum [Member] \| Impaired loans Assets [Member] \| Fair Value, Measurements, Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Quantitative information about Level 3 Fair Value Measurements
Fair Value Inputs, Discount for lack of marketability	30.00%
Maximum [Member] \| Other real estate owned [Member] \| Fair Value, Measurements, Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Quantitative information about Level 3 Fair Value Measurements
Fair Value Inputs, Discount for lack of marketability	30.00%
Minimum [Member] \| Impaired loans Assets [Member] \| Fair Value, Measurements, Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Quantitative information about Level 3 Fair Value Measurements
Fair Value Inputs, Discount for lack of marketability	0.00%
Minimum [Member] \| Other real estate owned [Member] \| Fair Value, Measurements, Nonrecurring [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Quantitative information about Level 3 Fair Value Measurements
Fair Value Inputs, Discount for lack of marketability	0.00%

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration

- Definition

Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	duration

- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the inputs and valuation technique(s) used to measure fair value.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

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