Business Restructuring - Reconciliation of Restructuring Liabilities (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Restructuring Cost And Reserve [Line Items]
Restructuring liability at December 31, 2016	$ 1,985
Expense recognized	786
Amounts paid	(1,478)
Foreign currency translation	23
Restructuring liability at March 31, 2017	1,316
Termination Benefits [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring liability at December 31, 2016	1,548
Amounts paid	(550)
Foreign currency translation	17
Restructuring liability at March 31, 2017	1,015
Other Expense [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring liability at December 31, 2016	437
Expense recognized	786
Amounts paid	(928)
Foreign currency translation	6
Restructuring liability at March 31, 2017	$ 301