Business Restructuring and Asset Impairments - Reconciliation of Restructuring Liability (Detail) - 2014 Restructuring [Member] - Severance Expense [Member] $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)
Restructuring Cost And Reserve [Line Items]
Restructuring liability at January 1, 2016	$ 1,722
Amounts paid	(1,695)
Foreign currency translation	(18)
Expense adjustment	(9)
Restructuring liability at December 31, 2016	$ 0