LOANS (Schedule Of The Aggregate Activity In These Loans Given To Directors) (Detail) (USD $) In Thousands, unless otherwise specified			12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Director [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance	$ 1,233,339	$ 1,178,841	$ 3,275
Effect of change in composition of board			300
New loans and advances on lines of credit			13,544
Loan payments			(12,725)
Ending balance	$ 1,233,339	$ 1,178,841	$ 4,394

It represents the Effect Of Change In Composition Of Board on loans.

No definition available.

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Namespace Prefix:	bkyf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

value New Loans And Advances On Lines Of Credit during the period.

+ References

No definition available.

+ Details

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Namespace Prefix:	bkyf_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.7)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Balance Type:	debit
Period Type:	instant

- Definition

The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration