INCOME TAXES (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Mar. 31, 2018
Income Tax Disclosure [Abstract]
Inventory, accruals and reserves	$ 1,118	$ 1,316
Interest deduction carry-forward	127	0
Federal and state operating loss carry-forwards	22,909	21,333
Tax credit carry-forwards	1,921	1,939
Equity compensation	288	402
Deferred revenue	(90)	(81)
Fixed assets	(781)	(878)
Intangible assets	(300)	(363)
Other	194	154
Valuation allowance	(25,386)	(23,803)
Total net deferred tax assets	$ 0	$ 19