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Concentrations of Risk (Details) - manufacturer
3 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Concentration Risk [Line Items]    
Number of third-party manufacturers 118 113
Sales | Customer Concentration Risk | Walmart    
Concentration Risk [Line Items]    
Concentration risk, percentage 20.50% 22.00%
Sales | Customer Concentration Risk | Walgreens    
Concentration Risk [Line Items]    
Concentration risk, percentage 10.60%  
Sales | Customer Concentration Risk | Amazon    
Concentration Risk [Line Items]    
Concentration risk, percentage   13.30%
Sales | Supplier Concentration Risk    
Concentration Risk [Line Items]    
Number of third-party manufacturers with long-term contracts 18 19
Top 5 brands | Sales | Product Concentration Risk    
Concentration Risk [Line Items]    
Concentration risk, percentage 45.50% 48.00%
Manufactures | Sales | Supplier Concentration Risk    
Concentration Risk [Line Items]    
Concentration risk, percentage 69.80% 60.60%