Stock Option and Cash-Based Stock Appreciation Rights Activity (Detail) - Jun. 30, 2015 - $ / shares	Total
Number of Shares
Outstanding - July 1, 2014	4,704,554
Granted	648,540
Exercised	(498,250)
Forfeited and Expired	(290,020)
Outstanding - June 30, 2015	4,564,824
Exercisable - June 30, 2015	2,899,994
Weighted Average Exercise Price
Outstanding - July 1, 2014	$ 16.37
Granted	14.03
Exercised	10.41
Forfeited and Expired	18.72
Outstanding - June 30, 2015	16.54
Exercisable - June 30, 2015	$ 16.42
Cash-Based Stock Appreciation Rights
Number of Shares
Outstanding - July 1, 2014	108,718
Granted	63,550
Exercised	(136)
Forfeited and Expired	(4,960)
Outstanding - June 30, 2015	167,172
Exercisable - June 30, 2015	31,672
Weighted Average Exercise Price
Outstanding - July 1, 2014	$ 18.28
Granted	14.19
Exercised	14.03
Forfeited and Expired	16.28
Outstanding - June 30, 2015	16.80
Exercisable - June 30, 2015	$ 18.50