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Summary of Significant Accounting Policies (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Entity Information [Line Items]
Capitalized Interest	$ 2.2	$ 1.9	$ 1.9
Customer Rebates	24.2	19.3
Consignment inventory	18.3	15.8
Advertising Expense	$ 19.1	$ 19.6	$ 15.5
Maximum
Entity Information [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Minimum
Entity Information [Line Items]
Equity Method Investment, Ownership Percentage	20.00%
All Customers [Member] [Member]
Entity Information [Line Items]
Concentration Risk, Percentage	46.00%	41.00%	45.00%

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-Publisher FASB
-Name Accounting Standards Codification
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