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Note 14 - Business Segments | 3 Months Ended
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Sep. 30, 2023
Notes to Financial Statements |
Segment Reporting Disclosure [Text Block] | 14. BUSINESS SEGMENTS The Company operated in four segments; the testing service industry (which performs structural and electronic tests of semiconductor devices), the designing and manufacturing of equipment (assembly of equipment that tests the structural integrity of integrated circuits and other products), distribution of various products from other manufacturers in Singapore and Asia and the real estate segment in China. The cost of equipment, current year investment in new equipment and depreciation expense are allocated into respective segments based on the primary purpose for which the equipment was acquired. Corporate expenses are allocated to the four segments on a combination of factors involving revenue, manpower costs and fixed assets investments, except the Malaysia and China operations, which is calculated based on actual sales. The following segment information table includes segment operating income or loss after including corporate expenses allocated to the segments, which gets eliminated in the consolidation. The following segment Information is unaudited for the three months ended September 30, 2023, and September 30, 2022: Business Segment Information:
| Three Months |  |  |  |  |  | Operating |  |  |  |  |  |  |  |  |  |  |  |  |
| Ended |  | Net |  |  | Income / |  |  | Total |  |  | Depr. And |  |  | Capital |
| Sept. 30, |  | Revenue |  |  | (Loss) |  |  | Assets |  |  | Amort. |  |  | Expenditures |
Manufacturing | 2023 |  | $ | 2,885 |  |  | $ | (42 | ) |  | $ | 18,996 |  |  | $ | 114 |  |  | $ | 19 |
| 2022 |  | $ | 3,585 |  |  | $ | 176 |  |  | $ | 12,791 |  |  | $ | 97 |  |  | $ | - |
Testing Services | 2023 |  |  | 5,164 |  |  |  | (128 | ) |  |  | 21,312 |  |  |  | 1,326 |  |  |  | 58 |
| 2022 |  |  | 6,364 |  |  |  | 861 |  |  |  | 27,770 |  |  |  | 767 |  |  |  | 1,156 |
Distribution | 2023 |  |  | 1,910 |  |  |  | 245 |  |  |  | 1,958 |  |  |  | - |  |  |  | - |
| 2022 |  |  | 1,982 |  |  |  | 265 |  |  |  | 1,603 |  |  |  | - |  |  |  | - |
Real Estate | 2023 |  |  | 7 |  |  |  | (26 | ) |  |  | 2,059 |  |  |  | 19 |  |  |  | - |
| 2022 |  |  | 8 |  |  |  | (14 | ) |  |  | 1,490 |  |  |  | 18 |  |  |  | - |
Corporate & Unallocated | 2023 |  |  | - |  |  |  | (50 | ) |  |  | 374 |  |  |  | 12 |  |  |  | - |
| 2022 |  |  | - |  |  |  | (221 | ) |  |  | 151 |  |  |  | - |  |  |  | - |
Total Company | 2023 |  | $ | 9,966 |  |  | $ | (1 | ) |  | $ | 44,699 |  |  | $ | 1,471 |  |  | $ | 77 |
| 2022 |  | $ | 11,939 |  |  | $ | 1,067 |  |  | $ | 43,805 |  |  | $ | 882 |  |  | $ | 1,156 |
Management is currently evaluating the ongoing contributions of each of its business segments to its current and future revenue and prospects, including its testing segment. As a result, we may divest one or more business segments in the future, including its testing segment, to enable management to concentrate on segments where it anticipates opportunities for future revenue growth, thereby maximizing shareholder value.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-22 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 15 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-15 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 31 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-31 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-42 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-40 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//280/tableOfContent Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 26 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-26 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 34 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-34 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-41 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-21 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-21 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482810/280-10-50-32 + Details
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