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Basis of Presentation and Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
1 Months Ended 2 Months Ended 12 Months Ended
Dec. 05, 2018
Jan. 31, 2019
Jan. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Related Party Transaction [Line Items]            
Shares repurchased (shares) 100,000          
Aggregate purchase price $ 183,700          
Preferred shares converted into common stock (shares) 100,000          
Series A preferred shares outstanding (shares)       0 200,000  
Percentage of inventory covered under new inventory system       95.00%    
Convertible preferred stock accretion of beneficial conversion feature $ 14,700     $ 17,567 [1] $ 3,532 $ 3,244
Acquired value of beneficial conversion feature       6,100    
Number of shares issued upon conversion (shares) 6,896,548          
Inducements paid $ 12,000     12,000    
Research, design and development expense       14,100 13,400 11,900
Marketing expenses, including advertising, production, promotion, and agency expenses       68,600 59,100 56,000
Prepaid advertising and promotional endorsement costs       7,500 7,000  
Net (loss) gain on disposal of property and equipment       (4,800) 800 (500)
Blackstone            
Related Party Transaction [Line Items]            
Paid for services received       $ 800 $ 700 $ 800
Minimum | Machinery and Equipment            
Related Party Transaction [Line Items]            
Property and equipment useful life       2 years    
Minimum | Furniture, Fixtures and Other            
Related Party Transaction [Line Items]            
Property and equipment useful life       2 years    
Maximum | Machinery and Equipment            
Related Party Transaction [Line Items]            
Property and equipment useful life       5 years    
Maximum | Furniture, Fixtures and Other            
Related Party Transaction [Line Items]            
Property and equipment useful life       10 years    
Finished Goods Inventory | Product Concentration Risk | Inventories            
Related Party Transaction [Line Items]            
Percentage of finished goods inventory (percent)       100.00% 97.50%  
Enterprise resource system software, warehouse management software, and point of sale software [Member] | Minimum            
Related Party Transaction [Line Items]            
Intangible asset useful life       2 years    
Enterprise resource system software, warehouse management software, and point of sale software [Member] | Maximum            
Related Party Transaction [Line Items]            
Intangible asset useful life       8 years    
Patents, copyrights, and trademarks [Member] | Minimum            
Related Party Transaction [Line Items]            
Intangible asset useful life       7 years    
Patents, copyrights, and trademarks [Member] | Maximum            
Related Party Transaction [Line Items]            
Intangible asset useful life       25 years    
Subsequent event            
Related Party Transaction [Line Items]            
Inducements paid   $ 3,000 $ 15,000      
[1] Represents total accretion of $17.6 million, net of $6.1 million acquired value of beneficial conversion feature attributable to repurchased Series A Convertible Preferred Stock.