Share-Based Compensation (Schedule of Compensation Cost for Stock Options, Unvested Shares and Performance Share Units) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total expense before income taxes			$ 11,802	$ 11,963
Stock Option
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total expense before income taxes	$ 1,618	$ 1,558	4,040	3,990
Income tax benefit	(502)	(496)	(1,269)	(1,251)
Total expense after income taxes	1,116	1,062	2,771	2,739
Stock Option | Cost Of Goods Sold
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total expense before income taxes	124	133	350	375
Stock Option | Selling, General And Administrative Expenses
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total expense before income taxes	1,494	1,425	3,690	3,615
Unvested Shares
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total expense before income taxes	2,061	3,271	5,237	6,489
Income tax benefit	(472)	(644)	(1,278)	(1,331)
Total expense after income taxes	1,589	2,627	3,959	5,158
Unvested Shares | Cost Of Goods Sold
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total expense before income taxes	320	693	799	1,165
Unvested Shares | Selling, General And Administrative Expenses
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total expense before income taxes	1,741	2,578	4,438	5,324
Performance Shares
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total expense before income taxes	1,183	823	2,525	1,484
Income tax benefit	(408)	(288)	(838)	(474)
Total expense after income taxes	775	535	1,687	1,010
Performance Shares | Cost Of Goods Sold
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total expense before income taxes	0	0	0	0
Performance Shares | Selling, General And Administrative Expenses
Compensation Related Costs Share Based Payments Disclosure [Line Items]
Total expense before income taxes	$ 1,183	$ 823	$ 2,525	$ 1,484