Inventories (Details) - USD ($) $ in Thousands	Dec. 30, 2017	Mar. 31, 2017
Inventory Disclosure [Abstract]
Raw materials	$ 1,900	$ 1,708
Finished goods	39,368	35,036
Inventory, gross	41,268	36,744
Excess and obsolete inventory reserves	(10,372)	(11,362)
Inventories, net	$ 30,896	$ 25,382