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Common Stock - Additional Information (Detail) - $ / shares
Jun. 30, 2015
Jun. 30, 2014
Equity [Abstract]    
Common stock, authorized shares 300,000,000 300,000,000
Common Stock, par value $ 0.0001 $ 0.0001
Preferred stock, authorized shares 50,000,000 50,000,000
Preferred stock, par value $ 0.0001 $ 0.0001