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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)
Mar. 31, 2015
Dec. 31, 2014
Current Assets:    
Allowance for doubtful accounts $ 347,175us-gaap_AllowanceForDoubtfulAccountsReceivable $ 267,985us-gaap_AllowanceForDoubtfulAccountsReceivable
Stockholders' equity    
Common stock, par value (usd per share) $ 0.01us-gaap_CommonStockParOrStatedValuePerShare $ 0.01us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 8,000,000us-gaap_CommonStockSharesAuthorized 8,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 4,893,548us-gaap_CommonStockSharesIssued 4,881,548us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 4,893,548us-gaap_CommonStockSharesOutstanding 4,881,548us-gaap_CommonStockSharesOutstanding
Treasury stock, at cost 40,920us-gaap_TreasuryStockShares 40,920us-gaap_TreasuryStockShares
Preferred stock, par value (usd per share) $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare $ 0.01us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized 1,000,000us-gaap_PreferredStockSharesAuthorized 1,000,000us-gaap_PreferredStockSharesAuthorized
Preferred stock, shares outstanding 0us-gaap_PreferredStockSharesOutstanding 0us-gaap_PreferredStockSharesOutstanding