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Stockholders' Equity - Activity under 2000 Non-Management Stock Option Plan (Detail) (USD $)
 12 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2011
Options Outstanding      
Options Granted 338,550 720,300 280,450
Balance, ending 2,271,309    
Weighted Average Price      
Options Granted $ 4.05 $ 3.21 $ 1.21
Balance, ending $ 2.72    
2000 Non-Management Stock Option Plan
      
Shares Available for Grant      
Balance, beginning       1,578
Options Granted       
Options Forfeited / Expired       58,293
Plan Shares Expired     (59,871)
Balance, ending         
Options Exercised        
Options Outstanding      
Balance, beginning 77,477 108,521 192,767
Options Granted     (25,953)
Options Forfeited / Expired (2,631) (3,389) (58,293)
Plan Shares Expired       
Balance, ending 44,090 77,477 108,521
Options Exercised (30,756) (27,655)  
Weighted Average Price      
Balance, beginning $ 1.28 $ 1.68 $ 7.07
Options Granted     $ 0.90
Options Forfeited / Expired $ 1.60 $ 11.46 $ 19.86
Plan Shares Expired       
Balance, ending $ 0.99 $ 1.28 $ 1.68
Options Exercised $ 1.68 $ 1.59