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Equity Instruments - Warrants Issued in Conjunction with its Senior Convertible Debentures (Detail) - $ / shares
9 Months Ended 12 Months Ended
Mar. 31, 2015
Jun. 30, 2014
Jun. 30, 2013
Number of Warrants Outstanding      
Number of Warrants Outstanding, Beginning Balance 102,613 102,613  
Number of Warrants Outstanding, Ending Balance 102,613 102,613 102,613
Warrants, Weighted Average Exercise Price      
Weighted Average Exercise Price, Outstanding Beginning Balance $ 4.53 $ 4.53  
Weighted Average Exercise Price, Outstanding Ending Balance $ 4.53 $ 4.53 $ 4.53
Weighted Average Remaining Contractual Life      
Weighted Average Remaining Contractual Life, Warrants Outstanding 3 years 2 months 1 day 3 years 11 months 1 day 4 years 4 months 28 days
Registered Direct Placements [Member]      
Number of Warrants Outstanding      
Number of Warrants, Issued     102,613
Warrants, Weighted Average Exercise Price      
Weighted Average Exercise Price, Warrants issued     $ 4.53