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Consolidated Statements of Changes in Stockholders’ Equity (USD $)
Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Total
Balance at Dec. 31, 2009 $ 47,618 $ 10,093,761 $ 5,349,822 $ 15,491,201
Balance (in Shares) at Dec. 31, 2009 4,761,825      
Exercise of stock options 410 63,440   63,850
Shares issued from exercise of stock options (in Shares) 41,000      
Stock-based compensation 165 172,325   172,490
Stock-based compensation (in Shares) 16,500      
Net Income     531,772 531,772
Balance at Dec. 31, 2010 48,193 10,329,526 5,881,594 16,259,313
Balance (in Shares) at Dec. 31, 2010 4,819,325     4,819,325
Exercise of stock options 1,316 472,657   473,973
Shares issued from exercise of stock options (in Shares) 131,560      
Stock-based compensation 400 290,198   290,598
Stock-based compensation (in Shares) 39,950      
Issuance of common stock under public offering-net 9,680 9,377,986   9,387,666
Issuance of common stock under public offering-net (in Shares) 967,950      
Net Income     3,779,123 3,779,123
Balance at Dec. 31, 2011 $ 59,589 $ 20,470,367 $ 9,660,717 $ 30,190,673
Balance (in Shares) at Dec. 31, 2011 5,958,785     5,958,785