Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015
Inventory Disclosure [Abstract]
Packaging and raw materials	$ 7,748	$ 7,588
Finished goods	66,329	66,412
Inventories	74,077	74,000
Inventory valuation reserves related to obsolete and slow-moving inventory	$ 3,800	$ 4,100