Note 9 - Property and Equipment - Components of Property and Equipment (Details) - USD ($) |
Jul. 31, 2026 |
Apr. 30, 2026 |
May 01, 2019 |
|---|---|---|---|
| Building and leasehold improvements | $ 652,000 | $ 652,000 | |
| Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Total property and equipment, net | Total property and equipment, net | Total property and equipment, net |
| Operating lease - right-of-use asset | $ 1,628,000 | $ 1,918,000 | $ 9,575,000 |
| Furniture and equipment | 2,382,000 | 2,382,000 | |
| Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization | 4,662,000 | 4,952,000 | |
| Accumulated depreciation and amortization | (2,742,000) | (2,713,000) | |
| Total property and equipment, net | $ 1,920,000 | $ 2,239,000 |
| X | ||||||||||
- Definition Amount of accumulated depreciation, depletion, and amortization of property, plant, and equipment. 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/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount before accumulated depreciation of building structures held for productive use including addition, improvement, or renovation to the structure, including, but not limited to, interior masonry, interior flooring, electrical, and plumbing. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Amount of lessee's right to use underlying asset under operating lease. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Indicates line item in statement of financial position that includes operating lease right-of-use asset. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, before accumulated depreciation, depletion, and amortization, of property, plant, and equipment. 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/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount, after accumulated depreciation, depletion, and amortization, of property, plant, and equipment. 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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