Activity Related to Liability for Special Charges (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Special Charges [Line Items]
Balance at December 31, 2012	$ 15,213
Additions	427
Payments	(3,860)
Foreign currency translation adjustment and other	(162)
Balance at June 30, 2013	11,618
Employee Termination Costs
Special Charges [Line Items]
Balance at December 31, 2012	6,696
Additions	(100)
Payments	(1,924)
Foreign currency translation adjustment and other	(162)
Balance at June 30, 2013	4,510
Lease Termination Costs
Special Charges [Line Items]
Balance at December 31, 2012	8,517
Additions	527
Payments	(1,936)
Balance at June 30, 2013	$ 7,108