Contingencies and Environmental Liabilities - Environmental Litigation and Matters - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Site Contingency [Line Items]
Accrued liabilities for environmental matters	$ 109,000	$ 125,000
Term for paying off environmental liabilities	15 years
Aggregate possible expenditure on environmental matters in excess of amounts accrued	$ 57,000
Oss Netherlands
Site Contingency [Line Items]
Environmental remediation expense	$ 235