Registration of securities issued in business combination transactions

Stockholders' (Deficit) Equity Retired Warrant (Detail)

v3.6.0.2
Stockholders' (Deficit) Equity Retired Warrant (Detail) - USD ($)
12 Months Ended
Jan. 14, 2013
Jun. 30, 2016
Sep. 30, 2016
Jun. 30, 2015
Jun. 30, 2014
Class of Stock [Line Items]          
Exercise price (usd per share)   $ 11.32 $ 11.32 $ 11.15 $ 10.08
Retired Warrant          
Class of Stock [Line Items]          
Payments for repurchase of warrants $ 800,000        
Redemption price (usd per share)   7.20      
Exercise price (usd per share)   $ 9.20      
Expected dividend   $ 0      
Risk free interest rate   0.20%      
Expected life (years)   1 year 6 months      
Expected volatility (based on historical price)   60.80%