Note 2 - Leases (Details Textual) - USD ($) |
1 Months Ended | 3 Months Ended | 12 Months Ended | |
|---|---|---|---|---|
Jan. 31, 2026 |
Mar. 31, 2026 |
Mar. 31, 2025 |
Dec. 31, 2025 |
|
| Increase (Decrease) in Lease Obligation From Modification | $ 224,000 | $ 224,000 | $ 1,344,000 | |
| Operating Lease, Impairment Loss | 0 | $ 2,708,000 | ||
| Increase (Decrease) in Operating Lease Liability | 33,000 | (665,000) | ||
| Office Space in Plano, Texas [Member] | ||||
| Gain (Loss) on Termination of Lease | (117,000) | $ (0) | ||
| Operating Lease, Early Termination, Liability | 50,000 | |||
| Increase (Decrease) in Operating Lease Liability | (77,000) | |||
| Operating Lease, Right-of-Use Asset, Reduction | $ 144,000 | |||
| Minimum [Member] | ||||
| Lessee, Operating Lease, Remaining Lease Term (Year) | 1 year | |||
| Maximum [Member] | ||||
| Lessee, Operating Lease, Remaining Lease Term (Year) | 8 years | |||