Restructuring and Other Charges - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) employee	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 12,258	$ 8,515	$ 5,344
Reduction in headcount \| employee	216
International
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 5,400	3,700	2,300
Reduction in headcount \| employee	151
Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 3,300	4,800	3,000
Reduction in headcount \| employee	34
North America
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,000	0	0
Reduction in headcount \| employee	19
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,600	0	0
Reduction in headcount \| employee	12
Other Restructuring \| Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 2,000
Staff Reductions \| International
Restructuring Cost and Reserve [Line Items]
Restructuring charges	5,400	3,700	2,300
Staff Reductions \| Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1,300	$ 4,800	$ 3,000
Staff Reductions \| North America
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2,000
Staff Reductions \| Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 1,600