v2.4.0.6
Cash and Cash Equivalents - Additional Information (Detail) (Maximum)
6 Months Ended
Jun. 30, 2012
Maximum
Cash and Cash Equivalents [Line Items]
Cash equivalents, maturity
90 days
X
- Definition
Cash Equivalents, Maturity Period
+ References
No definition available.
+ Details
Name:
bkyf_CashEquivalentsMaturityPeriod
Namespace Prefix:
bkyf_
Data Type:
xbrli:durationItemType
Balance Type:
na
Period Type:
duration
X
- Details
Name:
us-gaap_CashAndCashEquivalentsLineItems
Namespace Prefix:
us-gaap_
Data Type:
xbrli:stringItemType
Balance Type:
na
Period Type:
duration