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INCOME TAXES (Deferred tax assets and liabilities for federal and state income taxes) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Jun. 30, 2020
--- | --- | ---
Deferred tax assets: |  |
Federal and State NOL carryforward | $ 20 | $ 21
Research and other credits | 65 | 65
Reserves and accruals | 461 | 438
Stock based compensation | 268 | 110
Unrealized losses | 61 | 455
Inventory | 371 | 334
Total gross deferred tax assets | 1,246 | 1,423
Less: valuation allowance | (158) | (543)
Total deferred tax assets | 1,088 | 880
Deferred tax liabilities: |  |
Property and equipment, principally due to differing depreciation methods | (523) | (577)
Deferred state tax | (38) | (33)
Other | (64) | (11)
Total gross deferred tax liabilities | (625) | (621)
Net deferred tax assets | $ 463 | $ 259

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