Concentrations of Risk (Details)	3 Months Ended
	Jun. 30, 2015 manufacturer brand customer	Jun. 30, 2014 manufacturer brand
Concentration Risk [Line Items]
Number of third-party manufacturers	98	61
Sales | Product Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	43.90%	42.00%
Number of highest selling brands comprising group against which concentration risk is measured | brand	5	5
Sales | Customer Concentration Risk | Walmart
Concentration Risk [Line Items]
Concentration risk, percentage	19.90%	19.20%
Number of customers exceeding concentration risk benchmark | customer	1
Sales | Customer Concentration Risk | Customer No. 2
Concentration Risk [Line Items]
Concentration risk, percentage	9.40%
Sales | Supplier Concentration Risk
Concentration Risk [Line Items]
Concentration risk, percentage	83.90%	84.50%
Number of third-party manufacturers with long-term contracts	47	27
Accounts Receivable | Customer Concentration Risk | Walmart
Concentration Risk [Line Items]
Concentration risk, percentage	21.80%