Estimated Amortization Schedule of Intangible Assets for Future Periods (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule Of Estimated Future Amortization Expense [Line Items]
2014	$ 22,774
2015	18,575
2016	15,834
2017	13,003
2018 and beyond	28,930
Net	$ 99,116	$ 112,387