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Note 13. Stock Compensation Plan - Stock Compensation Awards (Details) (USD $)
 3 Months Ended
Mar. 31, 2015
Sep. 30, 2014
Dec. 31, 2014
Relative Total Shareholder Return      
Share-based Compensation Arrangement by Share-based Payment Award      
Stock Compensation, Shares Awarded 30,198us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= kbal_RelativeTotalShareholderReturnMember		    
Stock Compensation, Grant Date Fair Value $ 11.48us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= kbal_RelativeTotalShareholderReturnMember		    
Unrestricted Shares Director Compensation      
Share-based Compensation Arrangement by Share-based Payment Award      
Stock Compensation, Shares Awarded   17,335us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= kbal_UnrestrictedSharesDirectorCompensationMember		  
Stock Compensation, Grant Date Fair Value   $ 16.01us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= kbal_UnrestrictedSharesDirectorCompensationMember		  
Unrestricted Shares      
Share-based Compensation Arrangement by Share-based Payment Award      
Stock Compensation, Shares Awarded     17,529us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= kbal_UnrestrictedSharesMember
Stock Compensation, Grant Date Fair Value     $ 9.10us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= kbal_UnrestrictedSharesMember
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award      
Stock Compensation, Shares Awarded 29,533us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember		   159,416us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
Stock Compensation, Grant Date Fair Value     $ 9.10us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
Minimum | Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award      
Stock Compensation, Grant Date Fair Value $ 9.06us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember		    
Maximum | Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award      
Stock Compensation, Grant Date Fair Value $ 10.08us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_RestrictedStockUnitsRSUMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember