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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Jun. 30, 2023
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Twelve Months Ended |
(In thousands) |  | June 30, 2023 |
|  | Lighting Segment Segment |  |  | Display SolutionsSegment Solutions Segment |
Timing of revenue recognition |  |  |  |  |  |  |  |
Products and services transferred at a point in time |  | $ | 234,736 |  |  | $ | 177,564 |
Products and services transferred over time |  |  | 37,715 |  |  |  | 46,964 |
|  | $ | 272,451 |  |  | $ | 224,528 |
Type of Product and Services |  |  |  |  |  |  |  |
LED lighting, digital signage solutions, electronic circuit boards |  | $ | 224,529 |  |  | $ | 25,011 |
Poles and other display solutions elements |  |  | 44,473 |  |  |  | 156,057 |
Project management, installation services, shipping and handling |  |  | 3,449 |  |  |  | 43,460 |
|  | $ | 272,451 |  |  | $ | 224,528 |
|  | Twelve Months Ended |
(In thousands) |  | June 30, 2022 |
|  | Lighting Segment Segment |  |  | Display SolutionsSegment Solutions Segment |
Timing of revenue recognition |  |  |  |  |  |  |  |
Products and services transferred at a point in time |  | $ | 204,241 |  |  | $ | 156,241 |
Products and services transferred over time |  |  | 29,208 |  |  |  | 65,430 |
|  | $ | 233,449 |  |  | $ | 221,671 |
Type of Product and Services |  |  |  |  |  |  |  |
LED lighting, digital signage solutions, electronic circuit boards |  | $ | 191,791 |  |  | $ | 44,771 |
Poles and other display solutions elements |  |  | 39,339 |  |  |  | 136,573 |
Project management, installation services, shipping and handling |  |  | 2,319 |  |  |  | 40,327 |
|  | $ | 233,449 |  |  | $ | 221,671 |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
(In thousands) |  | June 30, 2023 |  |  | June 30, 2022 |
Accounts receivable |  | $ | 78,116 |  |  | $ | 78,249 |
Less: Allowance for credit losses |  |  | (435 | ) |  |  | (499 | )
Accounts receivable, net |  | $ | 77,681 |  |  | $ | 77,750 |
Property, Plant and Equipment [Table Text Block] |
Buildings (in years) | 28 | - | 40
Machinery and equipment (in years) | 3 | - | 10
Computer software (in years) | 3 | - | 8
Schedule of Product Warranty Liability [Table Text Block] |
(In thousands) |  | June 30, 2023 |  |  | June 30, 2022 |
Balance at beginning of the period |  | $ | 4,491 |  |  | $ | 5,295 |
Additions charged to expense |  |  | 6,626 |  |  |  | 2,960 |
Deductions for repairs and replacements |  |  | (4,616 | ) |  |  | (3,764 | )
Balance at end of the period |  | $ | 6,501 |  |  | $ | 4,491 |

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