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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Accounts receivable-trade, net allowance for doubtful accounts (in Dollars) $ 370us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 395us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
OTHER INTANGIBLES, net of accumulated amortization (in Dollars) $ 674,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization $ 665,000us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Preferred stock par value (in Dollars per share) $ 0.10us-gaap_PreferredStockParOrStatedValuePerShare $ 0.10us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized 20,000,000us-gaap_PreferredStockSharesAuthorized 20,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares issued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Preferred stock, shares outstanding 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding
Common stock, par value (in Dollars per share) $ 0.0024us-gaap_CommonStockParOrStatedValuePerShare $ 0.0024us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 25,000,000us-gaap_CommonStockSharesAuthorized 25,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 11,275,641us-gaap_CommonStockSharesIssued 11,239,157us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 10,282,018us-gaap_CommonStockSharesOutstanding 10,245,534us-gaap_CommonStockSharesOutstanding
Treasury stock shares 993,623us-gaap_TreasuryStockShares 993,623us-gaap_TreasuryStockShares