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Note 2 - Summary of Significant Accounting Policies (Tables) | 9 Months Ended
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Mar. 31, 2020
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
(In thousands) |  | March 31, 2020 |  |  | March 31, 2020 |
|  | Lighting Segment |  |  | Graphics Segment |  |  | Lighting Segment |  |  | Graphics Segment |
Timing of revenue recognition |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Products and services transferred at a point in time |  | $ | 43,222 |  |  | $ | 15,093 |  |  | $ | 147,260 |  |  | $ | 50,339 |
Products and services transferred over time |  |  | 5,791 |  |  |  | 6,904 |  |  |  | 18,380 |  |  |  | 26,109 |
|  | $ | 49,013 |  |  | $ | 21,997 |  |  | $ | 165,640 |  |  | $ | 76,448 |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | March 31, 2020 |  |  | March 31, 2020 |
|  | Lighting Segment |  |  | Graphics Segment |  |  | Lighting Segment |  |  | Graphics Segment |
Type of Product and Services |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
LED lighting, digital signage solutions, electronic circuit boards |  | $ | 42,536 |  |  | $ | 2,234 |  |  | $ | 143,615 |  |  | $ | 13,515 |
Legacy products |  |  | 5,949 |  |  |  | 14,444 |  |  |  | 20,252 |  |  |  | 47,155 |
Turnkey services and other |  |  | 528 |  |  |  | 5,319 |  |  |  | 1,773 |  |  |  | 15,778 |
|  | $ | 49,013 |  |  | $ | 21,997 |  |  | $ | 165,640 |  |  | $ | 76,448 |
Accounting Standards Update and Change in Accounting Principle [Table Text Block] |
ASC 606 Cumulative Impact |  |  |  |  |  |  |  |  |  |  |  |
(in thousands) |  | Balance as of |  |  |  |  |  |  | Balance as of |
|  | June 30, 2018 |  |  | Adjustments |  |  | July 1, 2018 |
Assets: |  |  |  |  |  |  |  |  |  |  |  |
Accounts receivable, net |  | $ | 50,609 |  |  | $ | 4,935 |  |  | $ | 55,544 |
Inventories, net |  | $ | 50,994 |  |  | $ | (4,167 | ) |  | $ | 46,827 |
Other long-term assets, net |  | $ | 9,786 |  |  | $ | (177 | ) |  | $ | 9,609 |
Shareholder's Equity: |  |  |  |  |  |  |  |  |  |  |  |
Retained earnings |  | $ | 15,124 |  |  | $ | 591 |  |  | $ | 15,715 |

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