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STOCK BASED COMPENSATION (Details 2) (Stock options)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Stock Based Compensation    
Number of shares authorized for issuance 100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized  
Stock Option Plans    
Stock Based Compensation    
Life of awards 10 years 10 years
1999 Plan    
Stock Based Compensation    
Vesting period 5 years 5 years
Number of shares authorized for issuance   100,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= ktyb_EmployeeAndNonEmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ktyb_EmployeeStockOptionPlan1999Member
1993 Non-Employee Directors Stock Ownership Incentive Plan    
Stock Based Compensation    
Number of shares authorized for issuance 20,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= ktyb_EmployeeAndNonEmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ktyb_NonEmployeeDirectorsStockOwnershipIncentivePlan1993Member
20,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
/ us-gaap_AwardTypeAxis
= ktyb_EmployeeAndNonEmployeeStockOptionMember
/ us-gaap_PlanNameAxis
= ktyb_NonEmployeeDirectorsStockOwnershipIncentivePlan1993Member