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Loan Servicing (Activity for Mortgage Servicing Rights and Related Valuation Allowance) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Servicing rights, net of valuation allowance: |  |  |
Beginning of year | $ 20 us-gaap_ServicingAssetAtAmortizedValue | $ 29 us-gaap_ServicingAssetAtAmortizedValue | $ 37 us-gaap_ServicingAssetAtAmortizedValue
Amortized to expense | (5)us-gaap_ServicingAssetAtAmortizedValueAmortization1 | (9)us-gaap_ServicingAssetAtAmortizedValueAmortization1 | (9)us-gaap_ServicingAssetAtAmortizedValueAmortization1
Change in valuation allowance |  |  | 1 us-gaap_ServicingAssetAtAmortizedValueOtherChangesThatAffectBalanceAmount
End of year | 15 us-gaap_ServicingAssetAtAmortizedValue | 20 us-gaap_ServicingAssetAtAmortizedValue | 29 us-gaap_ServicingAssetAtAmortizedValue
Valuation allowance: |  |  |
Beginning of year | 1 us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance | 1 us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance | 2 us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance
Reductions credited to operations |  |  | (1)us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsRecoveries
End of year | $ 1 us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance | $ 1 us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance | $ 1 us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance

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- Definition Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 25 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7524895&loc=d3e120260-111741 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746 + Details
Name: | us-gaap_ServicingAssetAtAmortizedValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Amount of amortization of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746 + Details
Name: | us-gaap_ServicingAssetAtAmortizedValueAmortization1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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- Definition Amount of other increase (decrease) to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (a)(7) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746 + Details
Name: | us-gaap_ServicingAssetAtAmortizedValueOtherChangesThatAffectBalanceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Reflects the estimated amount of impairment as of the balance sheet date of recognized servicing assets that are being amortized in proportion to and over the period of estimated net servicing income or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746 + Details
Name: | us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsBalance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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- Definition This item represents the contra-account activity for recoveries recognized for impairments of servicing assets which is offset against the value of servicing assets to arrive at a net carrying value as of the date of the statement of financial position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 50 -Section 50 -Paragraph 4 -Subparagraph (e)(2) -URI http://asc.fasb.org/extlink&oid=7882072&loc=d3e122739-111746 + Details
Name: | us-gaap_ValuationAllowanceForImpairmentOfRecognizedServicingAssetsRecoveries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration