Valuation And Qualifying Accounts (Detail) (Allowance for doubtful accounts receivable, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of period	$ 5,869		$ 5,934		$ 6,225
Charged to costs and expenses	921		774		596
Charged to other accounts	0		0		0
Other	(992)	[1]	(1,018)	[1]	(620)	[1]
Balance at end of period	5,717		5,869		5,934
Foreign Currency Gain (Loss) [Member]
Movement in Valuation Allowances and Reserves [Roll Forward]
Cumulative translation adjustment	$ (81)		$ 179		$ (267)

[1] Uncollectible accounts written off, net of recoveries.