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CONSOLIDATED BALANCE SHEETS PARENTHETICALS (USD $)
Mar. 31, 2015
Dec. 31, 2014
Parentheticals    
Allowance for doubtful accounts on trade accounts receivables $ 40,638,941us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 33,350,109us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Allowance for doubtful accounts on other receivables 67,988fil_AllowanceForDoubtfulAccountsOnOtherReceivables 60,325fil_AllowanceForDoubtfulAccountsOnOtherReceivables
Allowance for obsolescence of inventory 7,169,389fil_AllowanceForObsolescenceOfInventory 6,934,044fil_AllowanceForObsolescenceOfInventory
Accumulated depreciation on property and equipment 7,530,897us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment 6,640,718us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Accumulated amortization on intangible assets $ 4,299,549us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization $ 4,186,273us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
Preferred Stock, par or stated value $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
Preferred Stock, shares authorized 5,000,000us-gaap_PreferredStockSharesAuthorized 5,000,000us-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 or stated value $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Common Stock, shares authorized 95,000,000us-gaap_CommonStockSharesAuthorized 95,000,000us-gaap_CommonStockSharesAuthorized
Common Stock, shares issued 43,579,557us-gaap_CommonStockSharesIssued 43,579,557us-gaap_CommonStockSharesIssued
Common Stock, shares outstanding 43,579,557us-gaap_CommonStockSharesOutstanding 43,579,557us-gaap_CommonStockSharesOutstanding