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Note 11 - Income Taxes (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 27.60% | 34.00% | 35.00% |
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability | $ 3,322,991 |  |  |
Deferred Tax Assets, Capital Loss Carryforwards | $ 2,555,000 | $ 3,703,000 |  |
Operating Loss Carryforwards, Expiration Period | 3 years |  |  |
Oregon Net Operating Loss, Term | 4 years |  |  |
Deferred Tax Assets, Valuation Allowance, Total | $ 4,749,000 | 5,556,000 |  |
Unrecognized Tax Benefits, Ending Balance | 651,000 | 657,000 |  |
Unrecognized Tax Benefits, Interest on Income Taxes Accrued | 259,000 | 268,000 |  |
Unrecognized Tax Benefits, Income Tax Penalties Accrued | 159,000 | 194,000 |  |
Reserve for Unrecognized Tax Benefits, Including Penalties and Interest | 1,069,000 | 1,119,000 |  |
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | 651,000 |  |  |
Liability for Uncertainty in Income Taxes, Current | 322,000 |  |  |
Unrecognized Tax Benefits, Period Increase (Decrease), Total | 20,000 | 78,000 | $ 26,000 |
Unrecognized Tax Benefits, Interest on Income Taxes Expense | 9,000 | 66,000 | 48,000 |
Unrecognized Tax Benefits, Income Tax Penalties Expense | 35,000 | 27,000 | $ 10,000 |
Atlas Lighting Products, Inc. [Member] |  |  |  |
Unrecognized Tax Benefits, Increase Resulting from Acquisition |  | 483,000 |  |
Domestic Tax Authority [Member] |  |  |  |
Deferred Tax Assets, Capital Loss Carryforwards | 232,000 | 406,000 |  |
State and Local Jurisdiction [Member] | Oregon State Tax [Member] |  |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 108,000 | 137,000 |  |
State and Local Jurisdiction [Member] | New York State Division of Taxation and Finance [Member] |  |  |  |
Deferred Tax Assets, Operating Loss Carryforwards, State and Local | 2,086,000 | 1,716,000 |  |
Deferred Tax Assets, Valuation Allowance, Total | 2,086,000 | 1,716,000 |  |
Foreign Tax Authority [Member] | Canada Revenue Agency [Member] |  |  |  |
Deferred Tax Assets, Capital Loss Carryforwards | 2,555,000 |  |  | $ 11,972,000
Deferred Tax Assets, Valuation Allowance, Total | $ 10,780,000 |  |  |
Capital Loss Utilized During Period |  | $ 1,192,000 |  |

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