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Stockholders' Equity - Activity under 1998 Stock 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    
1998 Stock Plan
      
Shares Available for Grant      
Balance, beginning       70,380
Options Granted       
Options Forfeited / Expired       40,465
Plan Shares Expired     (110,845)
Balance, ending         
Options Exercised        
Options Outstanding      
Balance, beginning 296,012 430,711 510,392
Options Granted     (39,216)
Options Forfeited / Expired (3,040) (55,283) (40,465)
Plan Shares Expired       
Balance, ending 168,652 296,012 430,711
Options Exercised (124,320) (79,416)  
Weighted Average Price      
Balance, beginning $ 1.22 $ 2.86 $ 5.20
Options Granted     $ 0.73
Options Forfeited / Expired $ 1.50 $ 12.21 $ 34.51
Plan Shares Expired       
Balance, ending $ 1.22 $ 1.22 $ 2.86
Options Exercised $ 1.22 $ 2.43