XML 47 R37.htm IDEA: XBRL DOCUMENT
v3.20.2

Securities (Narrative) (Details) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 USD ($) security | Sep. 30, 2019 USD ($) | Sep. 30, 2020 USD ($) security | Sep. 30, 2019 USD ($)
Securities [Abstract] |  |  |  |
Securities evaluated for other than temporary impairment | security | 10 |  | 10 |
Available-for-sale Securities, Gross Realized Gains | $ 0 |  | $ 644 | $ 291
Available-for-sale Securities, Gross Realized Losses | 0 | $ 0 | 0 | 0
Held-to-maturity securities sales | $ 0 | $ 0 | $ 0 | $ 0

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 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
- Definition This item represents the gross loss 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_AvailableForSaleSecuritiesGrossRealizedLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration