INCOME TAXES (Schedule of Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Mar. 31, 2021
Deferred tax assets:
Inventory, accruals and reserves	$ 809	$ 860
Federal and state operating loss carry-forwards	16,485	18,313
Tax credit carry-forwards	1,847	1,916
Equity compensation	231	198
Deferred revenue	29	38
Lease liability	670	853
Other	247	406
Total deferred tax assets	20,318	22,584
Valuation allowance	(1,249)	(1,279)
Deferred tax assets, net of valuation allowance	19,069	21,305
Deferred tax liabilities:
Lease ROU asset	(518)	(670)
Fixed assets	(529)	(626)
Intangible assets	(217)	(224)
Total deferred tax liabilities	(1,264)	(1,520)
Total net deferred tax assets	$ 17,805	$ 19,785