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Concentrations of Risk (Details) - manufacturer | 3 Months Ended
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Jun. 30, 2020 | Jun. 30, 2019
Concentration Risk [Line Items] |  |
Number of third-party manufacturers | 113 | 113
Sales | Customer Concentration Risk | Walmart |  |
Concentration Risk [Line Items] |  |
Concentration risk, percentage | 22.00% | 24.20%
Sales | Customer Concentration Risk | Amazon |  |
Concentration Risk [Line Items] |  |
Concentration risk, percentage | 13.30% | 3.30%
Sales | Supplier Concentration Risk |  |
Concentration Risk [Line Items] |  |
Concentration risk, percentage | 60.60% | 67.10%
Number of third-party manufacturers with long-term contracts | 19 | 30
Top 5 brands | Sales | Product Concentration Risk |  |
Concentration Risk [Line Items] |  |
Concentration risk, percentage | 48.00% | 44.10%

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