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Note 4 - Earnings (Loss) Per Share (EPS) (Detail)	3 Months Ended	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2012
Options Excluded from Diluted Per Share Calculation as the Company Incurred a Loss for Period	741	625

X

- Definition

Options excluded from diluted per share calculation as the company incurred a loss for period.

+ References

No definition available.

+ Details

Name:	bkyi_OptionsExcludedFromDilutedPerShareCalculationAsTheCompanyIncurredALossForPeriod
Namespace Prefix:	bkyi_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration