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Condensed Consolidated Statement of Stockholders' Equity (Unaudited) (USD $)
Total
Common Stock
Additional Paid-In Capital
Treasury Stock
Accumulated Deficit
Beginning Balances at Dec. 31, 2011 $ 4,120,393 $ 29,578 $ 99,709,574 $ (47,183) $ (95,571,576)
Beginning Balances, (in shares) at Dec. 31, 2011   29,577,146      
Stock-based compensation 700,008    700,008      
Stock-based compensation, shares           
Exercise of stock options 410,402 179 410,223      
Exercise of stock options, shares 179,178 179,178      
Net income 10,533,257          10,533,257
Ending Balances at Jun. 30, 2012 $ 15,764,060 $ 29,757 $ 100,819,805 $ (47,183) $ (85,038,319)
Ending Balances, (in shares) at Jun. 30, 2012   29,756,324