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Note A - The Company and Summary of Significant Accounting Policies (Detail) - Estimated Useful Lives For Depreciation and Amortization | 12 Months Ended
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Dec. 31, 2012
Equipment [Member] | Minimum [Member] |
Equipment and leasehold improvements |
Property, Plant, and Equipment Estimated Useful life | 3 years
Equipment [Member] | Maximum [Member] |
Equipment and leasehold improvements |
Property, Plant, and Equipment Estimated Useful life | 5 years
Furniture and Fixtures [Member] | Minimum [Member] |
Equipment and leasehold improvements |
Property, Plant, and Equipment Estimated Useful life | 3 years
Furniture and Fixtures [Member] | Maximum [Member] |
Equipment and leasehold improvements |
Property, Plant, and Equipment Estimated Useful life | 5 years
Software [Member] |
Equipment and leasehold improvements |
Property, Plant, and Equipment Estimated Useful life | 3 years

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- Details
Name: | bkyi_EquipmentAndLeaseholdImprovementsAbstract
Namespace Prefix: | bkyi_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. + References No definition available. + Details
Name: | us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration