Valuation And Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Allowance for Doubtful Accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 12,522	$ 9,157	$ 13,678
Charged to (Reduction in) Costs and Expenses	3,197	4,970	1,772
Other	278	214	(140)
Deductions	(3,914)	(1,819)	(6,153)
Balance at End of Period	12,083	12,522	9,157
Valuation Allowance of Deferred Tax Assets
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	7,570	8,667	7,194
Charged to (Reduction in) Costs and Expenses	1,163	(1,097)	1,473
Balance at End of Period	$ 8,733	$ 7,570	$ 8,667