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Summary of Stock Options Transactions (Detail) (USD $)
12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Number of Shares      
Beginning Balance 2,413,525 2,493,125 2,233,475
Granted 610,600 863,100 277,000
Exercised (23,740) 0 0
Cancelled (343,037) (942,700) (17,350)
Ending Balance 2,657,348 2,413,525 2,493,125
Weighted Average Exercise Price      
Beginning Balance $ 0.95 $ 1.32 $ 1.36
Granted $ 0.50 $ 0.81 $ 0.96
Exercised $ 0.85 $ 0 $ 0
Cancelled $ 0.95 $ 1.79 $ 1.51
Ending Balance $ 0.83 $ 0.95 $ 1.32
Weighted Average Grant Date Fair Value      
Beginning Balance $ 0.53 $ 0.64 $ 0.65
Granted $ 0.40 $ 0.58 $ 0.57
Exercised $ 0.52 $ 0 $ 0
Cancelled $ 0.44 $ 0.85 $ 0.70
Ending Balance $ 0.52 $ 0.53 $ 0.64