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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Allowance for doubtful accounts (in Dollars) $ 121,770us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 125,766us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Preferred stock, shares authorized 1,250,000us-gaap_PreferredStockSharesAuthorized 1,250,000us-gaap_PreferredStockSharesAuthorized
Preferred stock - shares issued 0us-gaap_PreferredStockSharesIssued 0us-gaap_PreferredStockSharesIssued
Preferred stock - shares outstanding 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding
Preferred stock - no par value (in Dollars per share) $ 0us-gaap_PreferredStockNoParValue $ 0us-gaap_PreferredStockNoParValue
Common stock shares authorized 250,000,000us-gaap_CommonStockSharesAuthorized 250,000,000us-gaap_CommonStockSharesAuthorized
Common stock shares issued 10,996,733us-gaap_CommonStockSharesIssued 11,329,732us-gaap_CommonStockSharesIssued
Common stock shares outstanding 10,996,733us-gaap_CommonStockSharesOutstanding 11,329,732us-gaap_CommonStockSharesOutstanding
Common stock - no par value (in Dollars per share) $ 0us-gaap_CommonStockNoParValue $ 0us-gaap_CommonStockNoParValue