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Revenues (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Jan. 01, 2018
Revenue from Contract with Customer [Abstract]          
Shipping, Handling and Transportation Costs     $ 6.6 $ 6.4  
Allowance for Doubtful Accounts Receivable, Current $ 2.3   $ 2.3    
Net Commission Service Fee Revenue     50.00%    
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets         $ 0.4
Promotional, Marketing and Distribution Rights [Member]          
Disaggregation of Revenue [Line Items]          
Weighted average amortization period (in years)     25 years    
Sales Revenue, Net [Member]          
Disaggregation of Revenue [Line Items]          
Sales Commissions and Fees $ 2.0   $ 3.9    
Selling and Administrative Expenses [Member]          
Disaggregation of Revenue [Line Items]          
Sales Commissions and Fees   $ 2.1   $ 3.8