XML 50 R40.htm IDEA: XBRL DOCUMENT
v3.19.2

Securities (Narrative) (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 USD ($) security | Jun. 30, 2018 USD ($) | Jun. 30, 2019 USD ($) security | Jun. 30, 2018 USD ($)
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |  |  |
Securities evaluated for other than temporary impairment | 33 |  | 33 |
Available-for-sale Securities, Gross Realized Gains | $ | $ 0 | $ 0 | $ 0 | $ 0
Held-to-maturity securities sales | $ | $ 0 | $ 0 | $ 0 | $ 0
Municipals [Member] |  |  |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |  |  |
Securities evaluated for other than temporary impairment | 8 |  | 8 |
Corporates [Member] |  |  |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |  |  |
Securities evaluated for other than temporary impairment | 4 |  | 4 |
S&P Rated AAA [Member] |  |  |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |  |  |
Securities evaluated for other than temporary impairment | 5 |  | 5 |
S&P Rated AA [Member] |  |  |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |  |  |
Securities evaluated for other than temporary impairment | 26 |  | 26 |
S&P Rated A [Member] |  |  |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |  |  |
Securities evaluated for other than temporary impairment | 1 |  | 1 |
S&P Rated BBB+ [Member] |  |  |  |
Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] |  |  |  |
Securities evaluated for other than temporary impairment | 1 |  | 1 |

X
- Definition Number of securities evaluated for other than temporary impairment. + References No definition available. + Details
Name: | botj_NumberOfSecuritiesEvaluatedForOtherThanTemporaryImpairment
Namespace Prefix: | botj_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number Of Securities Evaluated For Other Than Temporary Impairment [Line Items] + References No definition available. + Details
Name: | botj_NumberOfSecuritiesEvaluatedForOtherThanTemporaryImpairmentLineItems
Namespace Prefix: | botj_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of debt and equity financial instruments classified as either held-to-maturity or available-for-sale. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesAndHeldToMaturitySecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesGrossRealizedGains
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CreditRatingStandardPoorsAxis=srt_StandardPoorsAAARatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CreditRatingStandardPoorsAxis=srt_StandardPoorsAARatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CreditRatingStandardPoorsAxis=srt_StandardPoorsARatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_CreditRatingStandardPoorsAxis=srt_StandardPoorsBBBPlusRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |