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INCOME TAXES (Details) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Income Loss Before Income Taxes [Abstract]    
Domestic $ 294,000katy_IncomeLossBeforeIncomeTaxesDomestic $ (1,460,000)katy_IncomeLossBeforeIncomeTaxesDomestic
Foreign (88,000)katy_IncomeLossBeforeIncomeTaxesForeign (21,000)katy_IncomeLossBeforeIncomeTaxesForeign
Total 206,000katy_IncomeLossBeforeIncomeTaxes (1,481,000)katy_IncomeLossBeforeIncomeTaxes
Current tax provision [Abstract]    
Federal 0us-gaap_CurrentFederalTaxExpenseBenefit 0us-gaap_CurrentFederalTaxExpenseBenefit
State 38,000us-gaap_CurrentStateAndLocalTaxExpenseBenefit 21,000us-gaap_CurrentStateAndLocalTaxExpenseBenefit
Total provision 38,000us-gaap_CurrentIncomeTaxExpenseBenefit 21,000us-gaap_CurrentIncomeTaxExpenseBenefit
Deferred tax (benefit) (2,317,000)us-gaap_DeferredIncomeTaxExpenseBenefit 0us-gaap_DeferredIncomeTaxExpenseBenefit
Total provision (2,279,000)us-gaap_IncomeTaxExpenseBenefit 21,000us-gaap_IncomeTaxExpenseBenefit
Effective Income Tax Rate Reconciliation, Amount [Abstract]    
Benefit from income taxes at statutory rate 72,000us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate (501,000)us-gaap_IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
State income taxes, net of federal benefit 25,000us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes 14,000us-gaap_IncomeTaxReconciliationStateAndLocalIncomeTaxes
Net operating losses adjustments 283,000katy_IncomeTaxReconciliationChangeInOperatingLosses (18,000)katy_IncomeTaxReconciliationChangeInOperatingLosses
Valuation allowance adjustments (2,931,000)us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance 187,000us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
Permanent items 10,000us-gaap_IncomeTaxReconciliationNondeductibleExpense 8,000us-gaap_IncomeTaxReconciliationNondeductibleExpense
Reduction of tax reserves 318,000us-gaap_IncomeTaxReconciliationDeductionsOther 332,000us-gaap_IncomeTaxReconciliationDeductionsOther
Other, net (56,000)us-gaap_IncomeTaxReconciliationOtherAdjustments (1,000)us-gaap_IncomeTaxReconciliationOtherAdjustments
Net provision for income taxes (2,279,000)us-gaap_IncomeTaxExpenseBenefit 21,000us-gaap_IncomeTaxExpenseBenefit
Deferred tax liabilities [Abstract]    
Inventory costs (694,000)us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts (642,000)us-gaap_DeferredTaxLiabilitiesDeferredExpenseCapitalizedInventoryCosts
Deferred tax assets [Abstract]    
Allowance for doubtful receivables 72,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts 67,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts
Accrued expenses and other items 4,816,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther 5,049,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsOther
Difference between book and tax bases of property (2,443,000)us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment (292,000)us-gaap_DeferredTaxAssetsPropertyPlantAndEquipment
Operating loss carry-forwards - domestic 62,054,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic 62,068,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsDomestic
Operating loss carry-forwards - foreign 2,389,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign 2,663,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign
Tax credit carry-forwards 12,633,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards 12,967,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwards
Total 79,521,000us-gaap_DeferredTaxAssetsGross 82,522,000us-gaap_DeferredTaxAssetsGross
Less valuation allowance (78,949,000)us-gaap_DeferredTaxAssetsValuationAllowance (81,880,000)us-gaap_DeferredTaxAssetsValuationAllowance
Total 572,000us-gaap_DeferredTaxAssetsNet 642,000us-gaap_DeferredTaxAssetsNet
Net deferred income tax asset (122,000)us-gaap_DeferredTaxAssetsLiabilitiesNet 0us-gaap_DeferredTaxAssetsLiabilitiesNet
Operating Loss Carryforwards [Line Items]    
Tax credit carry-forwards relate to federal minimum tax credits 1,200,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax  
Tax credit carry-forwards relate to general business 100,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsGeneralBusiness  
Tax credit carry-forwards relate to foreign 11,300,000us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsForeign  
Deferred tax liability 2,400,000us-gaap_DeferredTaxLiabilities  
Release of valuation allowance (2,300,000)us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount  
Tax Credit Carryforward [Line Items]    
Unrecognized tax benefit that would impact effective tax rate 100,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate 100,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
Unrecognized tax benefits, income tax penalties and interest accrued 25,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 25,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
A reconciliation of the beginning and ending balance for unrecognized tax benefits [Abstract]    
Beginning Balance 109,000us-gaap_UnrecognizedTaxBenefits 109,000us-gaap_UnrecognizedTaxBenefits
Tax positions related to prior years 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
Reductions for tax positions related to prior years 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions 0us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
Lapse of applicable statute of limitations 0us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations 0us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Ending Balance 109,000us-gaap_UnrecognizedTaxBenefits 109,000us-gaap_UnrecognizedTaxBenefits
Minimum [Member] | General Business Tax Credit Carryforward [Member]    
Tax Credit Carryforward [Line Items]    
Tax credit carryforwards, expiration date Dec. 31, 2020  
Minimum [Member] | Foreign Tax Credit Carryforward [Member]    
Tax Credit Carryforward [Line Items]    
Tax credit carryforwards, expiration date Dec. 31, 2014  
Maximum [Member] | General Business Tax Credit Carryforward [Member]    
Tax Credit Carryforward [Line Items]    
Tax credit carryforwards, expiration date Dec. 31, 2022  
Maximum [Member] | Foreign Tax Credit Carryforward [Member]    
Tax Credit Carryforward [Line Items]    
Tax credit carryforwards, expiration date Dec. 31, 2017  
Federal [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards 165,400,000us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_DomesticCountryMember		  
Federal [Member] | Minimum [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss expiration date Dec. 31, 2020  
Federal [Member] | Maximum [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss expiration date Dec. 31, 2033  
Foreign Tax Authority [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss carryforwards $ 7,000,000us-gaap_OperatingLossCarryforwards
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_ForeignCountryMember		  
Foreign Tax Authority [Member] | Minimum [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss expiration date Dec. 31, 2028  
Foreign Tax Authority [Member] | Maximum [Member]    
Operating Loss Carryforwards [Line Items]    
Operating loss expiration date Dec. 31, 2034