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Note 1 - Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Jun. 30, 2021
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Twelve Months Ended |
(In thousands) |  | June 30, 2021 |
|  | Lighting Segment |  |  | Display Solutions Segment |
Timing of revenue recognition |  |  |  |  |  |  |  |
Products and services transferred at a point in time |  | $ | 165,062 |  |  | $ | 66,123 |
Products and services transferred over time |  |  | 23,938 |  |  |  | 60,489 |
|  | $ | 189,000 |  |  | $ | 126,612 |
Type of Product and Services |  |  |  |  |  |  |  |
LED lighting, digital signage solutions, electronic circuit boards |  | $ | 164,778 |  |  | $ | 35,976 |
Poles and other display solutions elements |  |  | 22,492 |  |  |  | 61,919 |
Project management, installation services, shipping and handling |  |  | 1,730 |  |  |  | 28,717 |
|  | $ | 189,000 |  |  | $ | 126,612 |
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] |
(In thousands) |  | June 30, 2021 |  |  | June 30, 2020 |
Accounts receivable |  | $ | 57,941 |  |  | $ | 38,109 |
Less: Allowance for doubtful accounts |  |  | (256 | ) |  |  | (273 | )
Accounts receivable, net |  | $ | 57,685 |  |  | $ | 37,836 |
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, 2021 |  |  | June 30, 2020 |
Balance at beginning of the period |  | $ | 6,956 |  |  | $ | 7,687 |
Additions from company acquired |  |  | 248 |  |  |  | - |
Additions charged to expense |  |  | 859 |  |  |  | 2,482 |
Deductions for repairs and replacements |  |  | (2,768 | ) |  |  | (3,213 | )
Balance at end of the period |  | $ | 5,295 |  |  | $ | 6,956 |

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