Concentrations of Risk (Details) - manufacturer	3 Months Ended
	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%