INCOME TAXES (Deferred tax assets and liabilities for federal and state income taxes) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Jun. 30, 2023
Deferred tax assets:
Federal and state NOL carryforward	$ 23	$ 22
Research and other credits	65	65
Reserves	146	122
Accruals	309	267
Stock based compensation	1,008	814
Section 174 capitalization	738	830
Lease liability	488	599
Inventory	596	351
Deferred state tax	5	31
Total gross deferred tax assets	3,378	3,101
Less: valuation allowance	(90)	(91)
Total deferred tax assets	3,288	3,010
Deferred tax liabilities:
Property and equipment, principally due to differing depreciation methods	(675)	(767)
Right of use asset	(439)	(546)
Deferred state tax	(78)	0
Unrealized gains	(541)	(1,705)
Total gross deferred tax liabilities	(1,733)	(3,018)
Net deferred tax assets (liabilities)	$ 1,555	$ (8)