Schedule II-Valuation and Qualifying Accounts (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for doubtful accounts receivable
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 22,627	$ 21,569	$ 21,423
Charged to Expenses	7,133	6,673	6,795
Deductions	(3,845)	(4,370)	(4,491)
Translation Adjustments	(1,063)	(1,245)	(2,158)
Balance at End of Period	24,852	22,627	21,569
Deferred tax valuation allowance
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	36,334	30,983	21,160
Charged to Expenses	6,558	7,745	12,592
Deductions	(2,774)	(2,308)	(2,660)
Translation Adjustments	(808)	(86)	(109)
Balance at End of Period	$ 39,310	$ 36,334	$ 30,983