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Note 18 - Business Segments (Tables) | 12 Months Ended
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Jun. 30, 2024
Notes Tables |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
|  |  |  |  |  |  | Operating |  |  |  |  |  |  |  |  |  |  |  |  |
| Year Ended |  |  |  |  |  | Income / |  |  | Total |  |  | Depr. And |  |  | Capital |
| Jun. 30, |  | Revenue |  |  | (Loss) |  |  | Assets |  |  | Amort. |  |  | Expenditures |
Manufacturing | 2024 |  | $ | 16,057 |  |  | $ | 616 |  |  | $ | 17,978 |  |  | $ | 393 |  |  | $ | 58 |
| 2023 |  | $ | 13,827 |  |  | $ | (58 | ) |  | $ | 13,864 |  |  | $ | 481 |  |  | $ | 143 |
Testing Services | 2024 |  |  | 17,933 |  |  | $ | (322 | ) |  | $ | 20,193 |  |  | $ | 3,849 |  |  | $ | 235 |
| 2023 |  |  | 23,130 |  |  |  | 1,648 |  |  |  | 24,559 |  |  |  | 4,532 |  |  |  | 4,329 |
Distribution | 2024 |  |  | 8,297 |  |  | $ | 1,129 |  |  | $ | 1,609 |  |  | $ | - |  |  | $ | 38 |
| 2023 |  |  | 6,270 |  |  |  | 816 |  |  |  | 1,275 |  |  |  | - |  |  |  | - |
Real Estate | 2024 |  |  | 25 |  |  | $ | (100 | ) |  | $ | 2,377 |  |  | $ | 72 |  |  | $ | - |
| 2023 |  |  | 23 |  |  |  | (98 | ) |  |  | 1,988 |  |  |  | 75 |  |  |  | - |
Corporate & Unallocated | 2024 |  |  | - |  |  | $ | (230 | ) |  | $ | 383 |  |  | $ | 27 |  |  | $ | 211 |
| 2023 |  |  | - |  |  |  | (80 | ) |  |  | 500 |  |  |  | - |  |  |  | 26 |
Total Company | 2024 |  | $ | 42,312 |  |  | $ | 1,093 |  |  | $ | 42,540 |  |  | $ | 4,341 |  |  | $ | 542 |
| 2023 |  | $ | 43,250 |  |  | $ | 2,228 |  |  | $ | 42,186 |  |  | $ | 5,088 |  |  | $ | 4,498 |

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- Definition Tabular disclosure of all significant reconciling items in the reconciliation of total revenues from reportable segments to the entity's consolidated revenues. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-31 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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