Accrued Expenses (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Accrued Expenses [Line Items]
Royalties, certain third party product costs and licenses	$ 31,795	$ 33,795
Other	61,305	55,869
Total accrued expenses	$ 93,100	$ 89,664