Contingencies (Insurance Claim) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Loss Contingencies [Line Items]
Insurance Settlements	$ 15,700			$ 15,700
Insurance claim receivable					$ 5,000
Proceeds from insurance settlement, investing activities		$ 0	$ 0	2,350
Proceeds from insurance settlement, operating activities				$ 13,300
Cost of Sales
Loss Contingencies [Line Items]
Insurance recoveries	$ 10,700