Shareholders' Equity and Share-Based Compensation - Summary of Stock Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Outstanding at June 30, 2015, Shares	837,398
Granted, Shares	0
Exercised, Shares	(137,557)
Forfeited or expired, Shares	(32,262)
Outstanding at June 30, 2016, Shares	667,579	837,398
Exercisable at June 30, 2016, Shares	557,503
Outstanding at June 30, 2015, Weighted Average Exercise Price Per Share	$ 70.40
Granted, Weighted Average Exercise Price Per Share	0
Exercised, Weighted Average Exercise Price Per Share	52.60
Forfeited or expired, Weighted Average Exercise Price Per Share	86.27
Outstanding at June 30, 2016, Weighted Average Exercise Price Per Share	73.30	$ 70.40
Exercisable at June 30, 2016, Weighted Average Exercise Price Per Share	$ 74.46
Outstanding, Weighted Average Remaining Contractual Term (Years)	4 years 6 months 26 days	5 years 7 months 13 days
Exercisable at June 30, 2016, Weighted Average Remaining Contractual Term (Years)	4 years 18 days
Outstanding at June 30, 2015, Aggregate Intrinsic Value	$ (8,044)	$ 40,864
Exercisable at June 30, 2016, Aggregate Intrinsic Value	$ 7,435