Corporate Restructuring and Other Organizational Changes - Additional Information (Detail) (USD $)	3 Months Ended			3 Months Ended
	Mar. 31, 2012 Employee	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Americas	Mar. 31, 2012 Americas	Mar. 31, 2012 EMEA	Mar. 31, 2012 Asia /Pacific	Mar. 31, 2013 Severance	Dec. 31, 2012 Severance	Mar. 31, 2013 Facility Closures	Dec. 31, 2012 Facility Closures
Restructuring Cost and Reserve [Line Items]
Employee termination costs (adjustments)	$ 6,200,000			$ 1,600,000	$ 2,600,000	$ 2,900,000	$ 700,000
Liability is expected to be paid				12 months
Number of positions eliminated	179
Restructuring charges		$ 2,865,000	$ 1,914,000					$ 1,843,000	$ 618,000	$ 1,022,000	$ 1,296,000