Restructuring - Summary of Restructuring Liability (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Restructuring Reserve [Roll Forward]
Balance at December 31, 2017	$ 1,534
Costs Incurred	277
Payments	(659)
Translation Adjustment	37
Balance at March 31, 2018	1,189
Cumulative Costs Incurred to Date	10,425
2015 Initiatives | Employee Severance Costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2017	0
Costs Incurred	0
Payments	0
Translation Adjustment	0
Balance at March 31, 2018	0
Cumulative Costs Incurred to Date	4,131
2015 Initiatives | Facility Exit Related Costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2017	981
Costs Incurred	33
Payments	(115)
Translation Adjustment	0
Balance at March 31, 2018	899
Cumulative Costs Incurred to Date	1,761
2017 Initiatives | Employee Severance Costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2017	287
Costs Incurred	61
Payments	(96)
Translation Adjustment	29
Balance at March 31, 2018	281
Cumulative Costs Incurred to Date	3,412
2017 Initiatives | Facility Exit Related Costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2017	106
Costs Incurred	2
Payments	(108)
Translation Adjustment	0
Balance at March 31, 2018	0
Cumulative Costs Incurred to Date	285
2017 Initiatives | Other Related Costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2017	160
Costs Incurred	(21)
Payments	(139)
Translation Adjustment	0
Balance at March 31, 2018	0
Cumulative Costs Incurred to Date	634
2018 Initiatives | Employee Severance Costs
Restructuring Reserve [Roll Forward]
Balance at December 31, 2017	0
Costs Incurred	202
Payments	(201)
Translation Adjustment	8
Balance at March 31, 2018	9
Cumulative Costs Incurred to Date	$ 202