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Fair Value Measurements (Details 2) (Fair Value, Measurements, Nonrecurring [Member], Significant Unobservable Inputs (Level 3) [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012
Impaired loans Assets [Member] |
Quantitative information about Level 3 Fair Value Measurements |
Fair value assets | $ 7,944
Fair Value Measurements, Valuation Techniques | Discounted appraised value
Selling cost | 10.00%
Other Real Estate Owned [Member] |
Quantitative information about Level 3 Fair Value Measurements |
Fair value assets | $ 5,590
Fair Value Measurements, Valuation Techniques | Discounted appraised value
Selling cost | 7.00%
Maximum [Member] | Impaired loans Assets [Member] |
Quantitative information about Level 3 Fair Value Measurements |
Fair Value Inputs, Discount for lack of marketability | 34.00%
Maximum [Member] | Other Real Estate Owned [Member] |
Quantitative information about Level 3 Fair Value Measurements |
Fair Value Inputs, Discount for lack of marketability | 25.00%
Minimum [Member] | Impaired loans Assets [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] |
Quantitative information about Level 3 Fair Value Measurements |
Fair Value Inputs, Discount for lack of marketability | 0.00%

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- Definition 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. + 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 (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
Name: | us-gaap_FairValueInputsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- 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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Period Type: | duration

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- 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
Name: | us-gaap_FairValueInputsDiscountRate
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Data Type: | num:percentItemType
Balance Type: | na
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- 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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