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Fair Value Measurements (Information Regarding Quantitative Inputs Used To Value Assets Classified As Level 3) (Details) (Significant Unobservable Inputs (Level 3) [Member], USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015
Impaired Loans [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Assets, Fair Value | 3,128 us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = botj_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
Impaired Loans [Member] | Maximum [Member] | Discounted Appraised Value [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Selling cost | 10.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = botj_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
Discount for lack of marketability and age of appraisal | 25.00%us-gaap_FairValueInputsDiscountForLackOfMarketability / us-gaap_FairValueByAssetClassAxis = botj_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
Impaired Loans [Member] | Minimum [Member] | Discounted Appraised Value [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Selling cost | 5.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = botj_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
Discount for lack of marketability and age of appraisal | 0.00%us-gaap_FairValueInputsDiscountForLackOfMarketability / us-gaap_FairValueByAssetClassAxis = botj_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
Impaired Loans [Member] | Weighted Average [Member] | Discounted Appraised Value [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Selling cost | 6.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = botj_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_WeightedAverageMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
Discount for lack of marketability and age of appraisal | 15.00%us-gaap_FairValueInputsDiscountForLackOfMarketability / us-gaap_FairValueByAssetClassAxis = botj_ImpairedLoansMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_WeightedAverageMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
OREO [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Assets, Fair Value | 2,081 us-gaap_AssetsFairValueDisclosure / us-gaap_FairValueByAssetClassAxis = botj_OtherRealEstateOwnedMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member
OREO [Member] | Maximum [Member] | Discounted Appraised Value [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Selling cost | 10.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = botj_OtherRealEstateOwnedMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
Discount for lack of marketability and age of appraisal | 25.00%us-gaap_FairValueInputsDiscountForLackOfMarketability / us-gaap_FairValueByAssetClassAxis = botj_OtherRealEstateOwnedMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
OREO [Member] | Minimum [Member] | Discounted Appraised Value [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Selling cost | 5.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = botj_OtherRealEstateOwnedMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
Discount for lack of marketability and age of appraisal | 0.00%us-gaap_FairValueInputsDiscountForLackOfMarketability / us-gaap_FairValueByAssetClassAxis = botj_OtherRealEstateOwnedMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
OREO [Member] | Weighted Average [Member] | Discounted Appraised Value [Member] |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |
Selling cost | 6.00%us-gaap_FairValueInputsDiscountRate / us-gaap_FairValueByAssetClassAxis = botj_OtherRealEstateOwnedMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_WeightedAverageMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember
Discount for lack of marketability and age of appraisal | 15.00%us-gaap_FairValueInputsDiscountForLackOfMarketability / us-gaap_FairValueByAssetClassAxis = botj_OtherRealEstateOwnedMember / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel3Member / us-gaap_RangeAxis = us-gaap_WeightedAverageMember / us-gaap_ValuationTechniqueAxis = botj_DiscountedAppraisedValueMember

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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=25499696&loc=d3e19207-110258 + Details
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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=25499696&loc=d3e19207-110258 + Details
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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=25499696&loc=d3e19207-110258 + Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |