Acquisition and Divestiture - Identifiable Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jul. 07, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill (Note 4)	$ 44,800		$ 16,841
Texel
Business Acquisition [Line Items]
Cash and cash equivalents		$ 1,610
Accounts receivable		13,355
Inventories		17,525
Prepaid expenses and other current assets		2,469
Non-current environmental indemnification receivable (Note 12)		925
Property, plant and equipment, net		31,603
Investment in joint venture		616
Goodwill (Note 4)		28,281
Other intangible assets, net (Note 4)		22,887
Total assets acquired		119,271
Current liabilities		(8,520)
Long-term environmental remediation liability (Note 12)		(925)
Deferred tax liabilities		(7,117)
Total liabilities assumed		(16,562)
Net assets acquired		$ 102,709