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Note K - Commitments and Contingencies (Details) (USD $)	12 Months Ended		0 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Mar. 13, 2014
Note K - Commitments and Contingencies (Details) [Line Items]
Operating Leases, Rent Expense	$ 174,000us-gaap_LeaseAndRentalExpense	$ 159,000us-gaap_LeaseAndRentalExpense
LifeSouth [Member]
Note K - Commitments and Contingencies (Details) [Line Items]
Loss Contingency, Damages Sought, Value			$ 718,500us-gaap_LossContingencyDamagesSoughtValue / us-gaap_LitigationCaseAxis = bkyi_LifeSouthMember

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- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 4

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 9

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349

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