INCOME TAXES (Details) - USD ($)	Jun. 30, 2023	Jun. 30, 2022
INCOME TAXES
Net operating loss carryforwards	$ 40,073,000	$ 35,331,000
Research and development and AMT tax credits	8,094,000	7,171,000
Foreign tax credits	583,000	583,000
Basis differences in fixed assets and other	2,766,000	2,778,000
Gross	51,516,000	45,863,000
Valuation allowance	(51,516,000)	(45,863,000)
Net deferred tax assets	$ 0	$ 0