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Equity Incentive Plan - Schedule of Nonvested Restricted Stock Units Activity (Details) - Restricted Stock - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Jun. 30, 2015
Jun. 30, 2014
Restricted stock awards        
Non-vested, Beginning Balance (in shares) 310,470 403,965    
Granted (in shares) 34,500 0    
Vested (in shares) 93,670 91,895    
Forfeited (in shares) 2,550 1,600    
Non-vested, Ending Balance (in shares) 248,750 310,470    
Weighted- average grant date fair value        
Non-vested, Beginning Balance (in usd per share) $ 14.40 $ 14.39    
Granted (in usd per share) 17.35 0.00    
Vested (in usd per share) 14.39 14.39    
Forfeited (in usd per share) 14.37 14.37    
Non-vested, Ending Balance (in usd per share) $ 14.81 $ 14.40    
Aggregate intrinsic value (in usd) $ 4,686 $ 4,958 $ 5,203 $ 6,371