Business Restructuring and Asset Impairments - Reconciliation of Restructuring Liability (Detail) - Severance Expense [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
2014 Restructuring [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring liability at Beginning Balance	$ 1,722
Amounts paid	(1,695)
Foreign currency translation	(18)
Expense adjustment	(9)
Restructuring liability at Ending Balance	0	$ 1,722
2013 Restructuring [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring liability at Beginning Balance	563	1,040
Amounts paid	(464)	(420)
Foreign currency translation	(42)	(57)
Restructuring liability at Ending Balance	$ 57	$ 563