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CONDENSED CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)
Mar. 31, 2012
Dec. 31, 2011
Allowance for doubtful accounts (in dollars) $ 860,826 $ 859,509
Common stock, par value (in dollars per share) $ 0.002731 $ 0.002731
Common stock, shares authorized 18,307,038 18,307,038
Common stock, shares issued 4,565,000 4,560,000
Common stock, shares outstanding 4,565,000 4,560,000