Note C - Property and Equipment (Details Textual) - USD ($) |
12 Months Ended | |
|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Depreciation | $ 4,700,000 | $ 4,600,000 |
| Asset, Held-for-Sale, Not Part of Disposal Group | 4,000,000 | |
| Machinery and Equipment [Member] | ||
| Property, Plant, and Equipment, before Accumulated Depreciation, Disposition | 804,000 | 3,945,000 |
| Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization, Disposition | 798,000 | 3,896,000 |
| Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property | $ (6,000) | $ (49,000) |
| X | ||||||||||
- Definition Amount of decrease in accumulated depreciation, depletion, and amortization of property, plant, and equipment from disposition. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of assets held-for-sale that are not part of a disposal group. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, excluding oil and gas property and timber property. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of decrease in property, plant, and equipment from disposition. Includes, but is not limited to, land and land improvement; building; machinery and equipment; furniture and fixture; and work of art, historical treasure, or similar asset classified as collection. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Details
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