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CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
CURRENT ASSETS:    
Trade accounts receivable, net of allowances $ 183us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 171us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
STOCKHOLDERS' EQUITY (DEFICIT)    
Convertible preferred stock percentage (in hundredths) 15.00%katy_PercentageOfConvertiblePreferredStock 15.00%katy_PercentageOfConvertiblePreferredStock
15% Convertible preferred stock, par value (in dollars per share) $ 100us-gaap_PreferredStockParOrStatedValuePerShare $ 100us-gaap_PreferredStockParOrStatedValuePerShare
15% Convertible preferred stock, shares authorized (in shares) 1,200,000us-gaap_PreferredStockSharesAuthorized 1,200,000us-gaap_PreferredStockSharesAuthorized
15% Convertible preferred stock, shares issued (in shares) 1,131,551us-gaap_PreferredStockSharesIssued 1,131,551us-gaap_PreferredStockSharesIssued
15% Convertible preferred stock, shares outstanding (in shares) 1,131,551us-gaap_PreferredStockSharesOutstanding 1,131,551us-gaap_PreferredStockSharesOutstanding
15% Convertible preferred stock, liquidation value $ 113,155us-gaap_PreferredStockLiquidationPreferenceValue $ 113,155us-gaap_PreferredStockLiquidationPreferenceValue
Common stock, par value (in dollars per share) $ 1us-gaap_CommonStockParOrStatedValuePerShare $ 1us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized (in shares) 35,000,000us-gaap_CommonStockSharesAuthorized 35,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued (in shares) 9,822,304us-gaap_CommonStockSharesIssued 9,822,304us-gaap_CommonStockSharesIssued
Treasury stock, at cost, (in shares) 1,871,128us-gaap_TreasuryStockShares 1,871,128us-gaap_TreasuryStockShares