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Net Income Per Share (Details) (USD $)
 3 Months Ended 6 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Numerator        
Net income available to common shareholders $ 1,790,696 $ 1,259,950 $ 2,781,647 $ 2,275,633
Denominator        
Weighted average number of common shares - Basic 28,071,317 27,792,768 28,032,223 27,731,062
Effect of dilutive securities:        
Common stock warrants issued in connection with equity and financing transactions (in shares) 839 61,187 845 60,149
Stock Options and Incentive Warrants (in shares) 3,784,261 3,661,316 3,803,915 3,603,317
Total weighted average dilutive securities (in shares) 3,785,100 3,722,503 3,804,760 3,663,466
Weighted average number of common shares and dilutive potential common shares used in diluted EPS 31,856,417 31,515,271 31,836,983 31,394,528
Net income per common share - Basic (in dollars per share) $ 0.06 $ 0.05 $ 0.10 $ 0.08
Net income per common share - Diluted (in dollars per share) $ 0.06 $ 0.04 $ 0.09 $ 0.07