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17. INCOME TAXES (Details) - USD ($)
Jun. 30, 2021
Jun. 30, 2020
Income Tax Disclosure [Abstract]    
Net operating loss carryforwards $ 32,169,000 $ 24,321,000
Research and development and AMT tax credits 6,461,000 6,443,000
Foreign tax credits 583,000 583,000
Basis differences in fixed assets and other 2,723,000 1,076,000
Gross 41,936,000 32,423,000
Valuation allowance (41,936,000) (32,423,000)
Net deferred tax assets $ 0 $ 0