Asset Impairment Charges - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Indefinite-lived Intangible Assets [Line Items]
Non-cash asset impairment charge		$ 1,200,000	$ 3,262,000
Dresden Papier GmbH [Member] | Tradename [Member]
Indefinite-lived Intangible Assets [Line Items]
Non-cash asset impairment charge	$ 0	$ 1,200,000	$ 3,300,000