Property, Plant and Equipment - Additional Information (Detail) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Tangible Asset Impairment Charges	$ 14,763	$ 1,273	$ 13,630
Property, Plant and Equipment [Member]
Property, Plant and Equipment [Line Items]
Tangible Asset Impairment Charges	10,493
Europe [Member]
Property, Plant and Equipment [Line Items]
Tangible Asset Impairment Charges	6,327	$ 0	$ 2,285
Europe [Member] | Land and Building [Member]
Property, Plant and Equipment [Line Items]
Tangible Asset Impairment Charges	$ 4,270