XML 66 R52.htm IDEA: XBRL DOCUMENT
v3.19.1

Summary Of Significant Accounting Policies (Narrative) (Details) | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) segment shares | Dec. 31, 2017 USD ($) shares
Summary Of Significant Accounting Policies [Line Items] |  |
Maximum maturing period for cash and cash equivalents | 90 days |
Duration of loans interest stops accruing | 90 days |
Duration of consecutive payments before future payments assured | 6 months |
Duration of consumer term loans charged-off | 120 days |
Duration of consumer revolving credit loans charged-off | 180 days |
Impaired loans TDR | $ 424,000 | $ 440,000
Minimum principal loan balance for individual impairment test | 100,000,000 |
Unrecognized tax liabilities | $ 0 | $ 0
Number of reportable segments | segment | 2 |
Outstanding options | shares |  | 636
Advertising expense | $ 611,000 | $ 739,000
Equipment [Member] | Maximum [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Estimated useful life | 7 years |
Equipment [Member] | Minimum [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Estimated useful life | 3 years |
Building and Building Improvements [Member] | Maximum [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Estimated useful life | 39 years 6 months |
Building and Building Improvements [Member] | Minimum [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Estimated useful life | 10 years |
1999 Stock Option Plan [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Outstanding options | shares | 0 |
2018 Bank Of The James Financial Group, Inc. Equity Incentive Plan [Member] |  |
Summary Of Significant Accounting Policies [Line Items] |  |
Number of options granted | shares | 0 |

X
- Definition Duration Of Consumer Revolving Credit Loans Charged Off + References No definition available. + Details
Name: | botj_DurationOfConsumerRevolvingCreditLoansChargedOff
Namespace Prefix: | botj_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Duration Of Consumer Term Loans Charged Off + References No definition available. + Details
Name: | botj_DurationOfConsumerTermLoansChargedOff
Namespace Prefix: | botj_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Interest Stops Accruing On Loans Past Due + References No definition available. + Details
Name: | botj_InterestStopsAccruingOnLoansPastDue
Namespace Prefix: | botj_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Maturing Period Cash And Cash Equivalents Including Due From Banks And Federal Funds Sold + References No definition available. + Details
Name: | botj_MaturingPeriodCashAndCashEquivalentsIncludingDueFromBanksAndFederalFundsSold
Namespace Prefix: | botj_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Minimum Principal Loan Balance For Individual Impairment Test + References No definition available. + Details
Name: | botj_MinimumPrincipalLoanBalanceForIndividualImpairmentTest
Namespace Prefix: | botj_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reasonable Assured Future Payments After Consecutive Payments Made + References No definition available. + Details
Name: | botj_ReasonableAssuredFuturePaymentsAfterConsecutivePaymentsMade
Namespace Prefix: | botj_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Summary Of Significant Accounting Policies [Line Items] + References No definition available. + Details
Name: | botj_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | botj_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
Name: | us-gaap_AdvertisingExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of unrecognized tax benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 10B -URI http://asc.fasb.org/extlink&oid=84176650&loc=SL37586934-109318 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
Name: | us-gaap_UnrecognizedTaxBenefits
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_EquipmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingAndBuildingImprovementsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=botj_StockOptionPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=botj_TwentyEighteenBankOfJamesFinancialGroupInc.EquityIncentivePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |