Note A - Basis of Preparation - Financial Information Associated With Leases (Details) - USD ($) |
6 Months Ended | ||
|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
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| Operating lease right-of-use asset | $ 19,000 | $ 55,000 | $ 37,000 |
| Total leased assets | 19,000 | 55,000 | |
| Current operating lease liabilities | 19,000 | 36,000 | $ 38,000 |
| Long-term operating lease liabilities | 0 | 19,000 | |
| Total lease liabilities | 19,000 | 55,000 | |
| Operating lease cost | 18,000 | 17,000 | |
| Net lease expense | $ 18,000 | $ 9,000 | |
| X | ||||||||||
- Definition Total amount of lessee's right to use underlying assets under operating leases and the net investment in sales-type and direct financing leases. No definition available.
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| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease. No definition available.
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| X | ||||||||||
- Definition Amount of lease cost recognized by lessee for lease contract. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as current. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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| X | ||||||||||
- Definition Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- 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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