Percentage of common shares if Series A preferred shares were converted.

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The end date of the period reflected on the cover page if a periodic report. For all other reports and registration statements containing historical data, it is the date up through which that historical data is presented. If there is no historical data in the report, use the filing date. The format of the date is CCYY-MM-DD.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Number of shares issued for each share of convertible preferred stock that is converted.

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The total expense recognized in the period for promotion, public relations, and brand or product advertising.

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The percentage of FIFO (first in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017	Jan. 01, 2018
Related Party Transaction [Line Items]
Percentage of FIFO inventory (percent)						95.00%
Total marketing expenses	$ 14.5	$ 9.9	$ 55.4	$ 49.6
Prepaid advertising and promotional endorsement costs	$ 9.3		$ 9.3		$ 7.0
Document Period End Date			Sep. 30, 2018
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)			17.00%
Blackstone [Member]
Related Party Transaction [Line Items]
Expenses paid to affiliates	$ 0.1		$ 0.5	$ 0.6
Product Concentration Risk [Member] \| Finished Goods Inventory [Member] \| Inventories [Member]
Related Party Transaction [Line Items]
Percentage of finished goods in consolidated inventories (percent)			99.30%		97.50%