XML 27 R12.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Restrictions On Cash | 12 Months Ended
--- | ---
Dec. 31, 2015
Restrictions On Cash [Abstract] |
Restrictions On Cash | Note 3 - Restrictions on cash To comply with Federal Reserve regulations, the Bank is required to maintain certain average cash reserve balances. The daily average cash reserve requirements were approximately $5,562 and $4,987 for the weeks includin g December 31, 201 5 and 201 4, respectively.

X
- Definition Restrictions On Cash Disclosure [Text Block] + References No definition available. + Details
Name: | botj_RestrictionsOnCashDisclosureTextBlock
Namespace Prefix: | botj_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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