Property and Business Interruption Insurance Claims and Recoveries (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Oct. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Interruption Loss [Line Items]
Business interruption loss of production period	7 days
Total insurance recoveries			$ 460	$ 9,375
Insurance recoveries on the Consolidated Statements of Income		$ 0	0	8,290
Interruption of business [Member]
Business Interruption Loss [Line Items]
Total insurance recoveries			460	925
Insurance recoveries on the Consolidated Statements of Income			460	308
Interruption of business [Member] | Cost of Sales [Member]
Business Interruption Loss [Line Items]
Less: out-of-pocket expenses related to interruption of business in Cost of Sales			0	617
Property damage from fire [Member]
Business Interruption Loss [Line Items]
Total insurance recoveries			0	8,450
Insurance recoveries on the Consolidated Statements of Income			0	8,290
Property damage from fire [Member] | Insurance Recoveries [Member]
Business Interruption Loss [Line Items]
Less: Net book value of property loss in insurance recoveries			$ 0	$ 160