Risks and Uncertainties - Additional Information (Detail) - USD ($)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Unusual Risk or Uncertainty [Line Items]
Allowance for doubtful accounts	$ 5,000	$ 11,000
Customer Concentration Risk | Net Revenues
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	87.00%	86.00%
Customer Concentration Risk | Net Revenues | Target
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	51.00%	58.00%
Customer Concentration Risk | Net Revenues | Wal-Mart
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	28.00%	22.00%
Customer Concentration Risk | Net Revenues | Funai
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	8.00%	6.00%
Product Concentration Risk | Net Revenues
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	95.00%	93.00%
Product Concentration Risk | Net Revenues | Microwave Ovens
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	67.00%	62.00%
Product Concentration Risk | Net Revenues | Compact Refrigerators
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	28.00%	31.00%
Credit Concentration Risk | Trade Accounts Receivable, Net of Specific Reserves | Target
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	50.00%	36.00%
Credit Concentration Risk | Trade Accounts Receivable, Net of Specific Reserves | Wal-Mart
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	30.00%	58.00%
Supplier Concentration Risk [Member] | Products for Resale | Three Largest Factories Suppliers
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	96.00%	87.00%
Supplier Concentration Risk [Member] | Products for Resale | One Factory from the Largest Factories
Unusual Risk or Uncertainty [Line Items]
Concentration risk, percentage	66.00%	64.00%