INCOME TAXES (Deferred tax assets and liabilities for federal and state income taxes) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022
Deferred tax assets:
Federal and state NOL carryforward	$ 22	$ 22
Research and other credits	65	65
Reserves	122	163
Accruals	267	322
Stock based compensation	814	651
Unrealized losses		35
Section 174 capitalization	830
Lease liability	599	713
Inventory	351	514
Deferred state tax	31
Total gross deferred tax assets	3,101	2,485
Less: valuation allowance	(91)	(98)
Total deferred tax assets	3,010	2,387
Deferred tax liabilities:
Property and equipment, principally due to differing depreciation methods	(767)	(820)
Right of use asset	(546)	(658)
Deferred state tax		(77)
Unrealized gains	(1,705)	(541)
Other		(35)
Total gross deferred tax liabilities	(3,018)	(2,131)
Net deferred tax assets (liabilities)	$ (8)	$ 256