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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Jun. 30, 2025
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Twelve Months Ended |
(In thousands) |  | June 30, 2025 |
|  | Lighting Segment |  |  | Display Solutions Segment |
Timing of revenue recognition |  |  |  |  |  |  |  |
Products and services transferred at a point in time |  | $ | 208,193 |  |  | $ | 259,432 |
Products and services transferred over time |  |  | 40,164 |  |  |  | 65,588 |
|  | $ | 248,357 |  |  | $ | 325,020 |
Type of Product and Services |  |  |  |  |  |  |  |
LED lighting, digital signage solutions, electronic circuit boards |  | $ | 202,552 |  |  | $ | 26,144 |
Poles and other display solutions elements |  |  | 43,211 |  |  |  | 233,792 |
Project management, installation services, shipping and handling |  |  | 2,594 |  |  |  | 65,084 |
|  | $ | 248,357 |  |  | $ | 325,020 |
|  | Twelve Months Ended |
(In thousands) |  | June 30, 2024 |
|  | Lighting Segment |  |  | Display Solutions Segment |
Timing of revenue recognition |  |  |  |  |  |  |  |
Products and services transferred at a point in time |  | $ | 219,820 |  |  | $ | 151,972 |
Products and services transferred over time |  |  | 42,593 |  |  |  | 55,253 |
|  | $ | 262,413 |  |  | $ | 207,225 |
Type of Product and Services |  |  |  |  |  |  |  |
LED lighting, digital signage solutions, electronic circuit boards |  | $ | 215,758 |  |  | $ | 32,521 |
Poles and other display solutions elements |  |  | 43,719 |  |  |  | 132,604 |
Project management, installation services, shipping and handling |  |  | 2,936 |  |  |  | 42,100 |
|  | $ | 262,413 |  |  | $ | 207,225 |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
Net Accounts Receivable |  |  |  |  |  |  |  |
(In thousands) |  | June 30, 2025 |  |  | June 30, 2024 |
Accounts receivable |  | $ | 105,499 |  |  | $ | 79,474 |
Less: Allowance for credit losses |  |  | (1,152 | ) |  |  | (848 | )
Accounts receivable, net |  | $ | 104,347 |  |  | $ | 78,626 |
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, 2025 |  |  | June 30, 2024 |
Balance at beginning of the period |  | $ | 6,623 |  |  |  | 6,501 |
Addition from acquired company |  |  | 73 |  |  |  | 345 |
Additions charged to expense |  |  | 5,304 |  |  |  | 3,781 |
Deductions for repairs and replacements |  |  | (4,495 | ) |  |  | (4,004 | )
Balance at end of the period |  | $ | 7,505 |  |  |  | 6,623 |

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