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Note 6 - Goodwill and Other Intangible Assets (Details Textual) |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Mar. 01, 2017 USD ($) | Mar. 01, 2016 USD ($) | Mar. 31, 2017 USD ($) | Jun. 30, 2017 USD ($) | Jun. 30, 2016 USD ($) | Feb. 21, 2017 USD ($) | Sep. 30, 2014 USD ($)
Number of Reporting Units |  |  |  | 3 | 3 |  |
Goodwill |  |  |  | $ 58,538,000 | $ 10,508,000 |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | $ 0 | $ 0 |  |  |  |  |
Intangible Assets, Indefinite-lived, Amount of Fair Value in Excess of Carrying Amount | $ 15,200,000 | $ 8,400,000 |  |  |  |  |
Intangible Assets, Indefinite-lived, Percentage of Fair Value in Excess of Carrying Amount | 445.00% | 245.00% |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  |  |  | 55,335,000 | 22,052,000 |  |
Finite-Lived Intangible Assets, Accumulated Amortization |  |  |  | 20,588,000 | 19,888,000 |  |
Customer Relationships [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  |  |  | 35,563,000 | 9,316,000 |  |
Finite-Lived Intangible Assets, Accumulated Amortization |  |  |  | 7,956,000 | 7,581,000 |  |
Customer Relationships [Member] | LSI Saco [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Assets, Gross |  |  |  |  |  |  | $ 1,306,000
Finite-Lived Intangible Assets, Accumulated Amortization |  |  |  |  |  |  | $ 428,000
Atlas Lighting Products, Inc. [Member] |  |  |  |  |  |  |
Goodwill |  |  |  | $ 48,030,000 |  | $ 47,868,000 |
Lighting Segment [Member] |  |  |  |  |  |  |
Number of Reporting Units |  |  |  | 1 |  |  |
Good will Impairment Testing Value Above Carrying Value |  |  |  | $ 60,000,000 | $ 89,000,000 |  |
Good will Impairment Testing Percent Value Above Carrying Value |  |  |  | 80.00% | 112.00% |  |
Goodwill |  |  |  | $ 48,165,000 | $ 135,000 |  |
Graphics Segment [Member] |  |  |  |  |  |  |
Number of Reporting Units |  |  |  | 1 | 1 |  |
Good will Impairment Testing Value Above Carrying Value |  |  |  | $ 4,200,000 | $ 1,700,000 |  |
Good will Impairment Testing Percent Value Above Carrying Value |  |  |  | 424.00% | 183.00% |  |
Goodwill |  |  |  | $ 1,165,000 | $ 1,165,000 |  |
Graphics Segment [Member] | Customer Relationships [Member] |  |  |  |  |  |  |
Impairment of Intangible Assets, Finite-lived |  |  | $ 479,000 |  |  |  |
Finite-Lived Intangible Assets, Gross | $ 479,000 |  |  |  |  |  |
Technology Segment [Member] |  |  |  |  |  |  |
Good will Impairment Testing Value Above Carrying Value |  |  |  | $ 23,200,000 | $ 15,400,000 |  |
Good will Impairment Testing Percent Value Above Carrying Value |  |  |  | 95.00% | 59.00% |  |
Goodwill |  |  |  | $ 9,208,000 | $ 9,208,000 |  |

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