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Note 17 - Business Segments (Tables) | 12 Months Ended
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Jun. 30, 2022
Notes Tables |
Reconciliation of Revenue from Segments to Consolidated [Table Text Block] |
Business Segment Information: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| Year |  |  |  |  |  | Operating |  |  |  |  |  |  | Depr. |  |  |  |  |
| Ended |  | Net |  |  | Income |  |  | Total |  |  | and |  |  | Capital |
| June 30, |  | Revenue |  |  | (Loss) |  |  | Assets |  |  | Amort. |  |  | Expenditures |
Manufacturing | 2022 |  | $ | 13,526 |  |  | $ | 275 |  |  | $ | 14,652 |  |  | $ | 417 |  |  | $ | 116 |
| 2021 |  | $ | 13,151 |  |  | $ | 385 |  |  | $ | 13,622 |  |  | $ | 411 |  |  | $ | 350 |
Testing Services | 2022 |  |  | 19,477 |  |  |  | 1,313 |  |  |  | 25,148 |  |  |  | 2,577 |  |  |  | 1,351 |
| 2021 |  |  | 13,846 |  |  |  | (997 | ) |  |  | 21,099 |  |  |  | 2,570 |  |  |  | 762 |
Distribution | 2022 |  |  | 11,037 |  |  |  | 1,525 |  |  |  | 1,740 |  |  |  | - |  |  |  | - |
| 2021 |  |  | 5,437 |  |  |  | 657 |  |  |  | 1,156 |  |  |  | 4 |  |  |  | - |
Real Estate | 2022 |  |  | 25 |  |  |  | (119 | ) |  |  | 1,608 |  |  |  | 81 |  |  |  | 1 |
| 2021 |  |  | 28 |  |  |  | (116 | ) |  |  | 2,070 |  |  |  | 74 |  |  |  | - |
Fabrication | 2022 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Services* | 2021 |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | - |
Corporate & | 2022 |  |  | - |  |  |  | (641 | ) |  |  | 273 |  |  |  | - |  |  |  |  |
Unallocated | 2021 |  |  | - |  |  |  | 10 |  |  |  | 359 |  |  |  | - |  |  |  |  |
Total Company | 2022 |  | $ | 44,065 |  |  | $ | 2,353 |  |  | $ | 43,421 |  |  | $ | 3,075 |  |  | $ | 1,468 |
| 2021 |  | $ | 32,462 |  |  | $ | (61 | ) |  | $ | 38,306 |  |  | $ | 3,059 |  |  | $ | 1,112 |

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8924-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8906-108599 + Details
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