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Earnings Per Share - Additional Information (Detail)
12 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2012
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]      
Weighted average shares issuable upon the exercises of stock options excluded from the dilutive share calculation 507,000 470,000 220,000