Schedule of Comprehensive Loss Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Comprehensive Income (Loss) [Line Items]
Net income	$ 8,514	$ 699	$ 15,207	$ 12,186
Foreign currency translation adjustment	(11,005)	4,934	(4,158)	18,400
Change in unrealized gain on derivatives, net of tax	(241)	(1,361)	(136)	(933)
Pension liability adjustment, net of tax	2	(77)	(2)	185
Comprehensive income (loss)	$ (2,730)	$ 4,195	$ 10,911	$ 29,838