Change in Balances of Accumulated Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (72,434)	$ 1,415	$ (14,078)
Current Period Change	(13,699)	(73,849)	15,493
Ending Balance	(86,133)	(72,434)	1,415
Foreign Currency translation adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(70,157)	(325)	(14,200)
Current Period Change	(11,910)	(69,832)	13,875
Ending Balance	(82,067)	(70,157)	(325)
Gains(losses) on net investment-hedge derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(2,354)	1,723	0
Current Period Change	(1,558)	(4,077)	1,723
Ending Balance	(3,912)	(2,354)	1,723
Unrealized Gains on Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	164	419	88
Current Period Change	682	(255)	331
Ending Balance	846	164	419
Defined Benefit Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(87)	(402)	34
Current Period Change	(913)	315	(436)
Ending Balance	$ (1,000)	$ (87)	$ (402)