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Loans, Allowance For Loan Losses and OREO And OREO (Changes In OREO Balance) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Loans, Allowance For Loan Losses and OREO [Abstract]
Balance at the beginning of the year (net)	$ 956us-gaap_RealEstateAcquiredThroughForeclosure	$ 1,451us-gaap_RealEstateAcquiredThroughForeclosure	$ 1,451us-gaap_RealEstateAcquiredThroughForeclosure
Transfers from loans	1,125us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1		473us-gaap_TransferOfPortfolioLoansAndLeasesToHeldForSale1
Capitalized costs
Writedowns			(167)us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs
Sales proceeds			(780)botj_SaleOfOtherRealEstateOwned
(Loss) on disposition		3us-gaap_GainsLossesOnSalesOfOtherRealEstate	(21)us-gaap_GainsLossesOnSalesOfOtherRealEstate
Balance at the end of the period (net)	$ 2,081us-gaap_RealEstateAcquiredThroughForeclosure		$ 956us-gaap_RealEstateAcquiredThroughForeclosure

X

- Definition

Sale Of Other Real Estate Owned

+ References

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

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-Section S99

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-Subparagraph (SX 210.9-03.7(d))

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The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.

+ References

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-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

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-Subparagraph (SX 210.9-04.14(d))

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- Definition

Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

+ References

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-Publisher FASB

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- Definition

The amount of interest capitalized to an operative builder's inventory during the period.

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Value of loans and leases held in the entity's portfolio transferred to loans and leases held-for-sale in noncash transactions.

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