Commitments and Contingencies - Additional Information (Detail) (USD $)
3 Months Ended 9 Months Ended 12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Mar. 31, 2015
Mar. 31, 2014
Jun. 30, 2014
Jan. 14, 2008
Loss Contingencies [Line Items]            
Adverse effect on earnings per share resulting from changing sales forecasts           $ 1.00
Costs relating to delayed delivery of product $ 9,800,000 $ 0 $ 24,500,000      
Gain relating to contingency       6,100,000    
Amount of potential liability including interest 1,400,000   1,400,000      
Potential payments remitted during period 0   0   12,000,000  
Cost of Sales [Member]            
Loss Contingencies [Line Items]            
Reduction in estimated accruals $ 0   $ 15,900,000