Inventories (Details) (USD $)	Sep. 30, 2013	Mar. 31, 2013
Inventory Disclosure [Abstract]
Packaging and raw materials	$ 1,034,000	$ 1,875,000
Finished goods	60,901,000	58,326,000
Inventories	61,935,000	60,201,000
Inventory valuation reserves related to obsolete and slow-moving inventory	$ 2,200,000	$ 1,300,000