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INCOME TAXES (Deferred tax assets and liabilities for federal and state income taxes) (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Jun. 30, 2017
--- | --- | ---
Deferred tax assets: |  |
Federal & State NOL carryforward | $ 23 | $ 181
Research & other credits | 1,517 | 1,832
Reserves and accruals | 438 | 180
Stock based compensation | 55 |
Inventory | 371 | 446
Other intangibles | 70 | 178
Goodwill |  | 77
Other | 48 | 1
Total gross deferred tax assets | 2,522 | 2,895
Less: valuation allowance | (368) | (89)
Total deferred tax assets | 2,154 | 2,806
Deferred tax liabilities: |  |
Property and equipment, principally due to differing depreciation methods | (318) | (438)
Deferred state tax | (152) | (295)
Other intangibles |  | (2)
Other | (6) | (23)
Total gross deferred tax liabilities | (476) | (758)
Net deferred tax assets | $ 1,678 | $ 2,048

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