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Significant Risks and Uncertainties - Additional Information (Details)
$ in Millions
3 Months Ended
Mar. 31, 2021
USD ($)
Channels
facility
Mar. 31, 2020
USD ($)
Significant Risks And Uncertainties [Line Items]    
Incurred loss | $ $ 5.4 $ 8.0
Sales Channel, Directly to Consumer [Member] | Net Sales    
Significant Risks And Uncertainties [Line Items]    
Number of channels | Channels 2  
Percentage of net sales 81.30% 93.90%
Channel One [Member] | VA/DoD facilities | Net Sales    
Significant Risks And Uncertainties [Line Items]    
Number of channels 5  
Percentage of net sales 55.20%  
Channel Two [Member] | VA/DoD facilities | Net Sales    
Significant Risks And Uncertainties [Line Items]    
Number of channels 2  
Channel Two [Member] | VA/DoD facilities | Minimum | Net Sales    
Significant Risks And Uncertainties [Line Items]    
Percentage of net sales 10.00%