Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Jan. 01, 2018
Related Party Transaction [Line Items]
Percentage of FIFO inventory (percent)						95.00%
Total marketing expenses	$ 25.4	$ 27.7	$ 40.9	$ 39.7
Prepaid advertising and promotional endorsement costs	$ 9.0		$ 9.0		$ 7.0
Series A Preferred Stock [Member]
Related Party Transaction [Line Items]
Series A preferred shares, number of shares issuable if converted (shares)	13.8		13.8
Percentage of common stock if-converted Series A preferred stock (percent)			16.80%
Blackstone [Member]
Related Party Transaction [Line Items]
Expenses paid to affiliates	$ 0.3	$ 0.4	$ 0.4	$ 0.5
Product Concentration Risk [Member] | Finished Goods Inventory [Member] | Inventories [Member]
Related Party Transaction [Line Items]
Percentage of finished goods in consolidated inventories (percent)			98.10%		97.50%