Share-Based Compensation Expense by Award Type (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	$ 10,906	$ 12,989	$ 12,997
Stock Options and Cash-Based Stock Appreciation Rights
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	4,309	5,158	5,818
Restricted Share Awards and Cash-Based Restricted Share Unit Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	4,401	5,182	4,868
Performance Share Awards and Cash-Based Performance Share Unit Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation expense	$ 2,196	$ 2,649	$ 2,311