Note 7 - Real Estate - Real Estate Disclosure (Details) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Net Realizable Value at beginning of period | $ 50,388,000 | $ 53,780,000 |
| Real Estate, Held-for-sale, Period Increase (Decrease) | 3,602,000 | 3,392,000 |
| Net Realizable Value on December 31, | 53,990,000 | 50,388,000 |
| Cortlandt Manor Medical Center [Member] | ||
| Real Estate, Held-for-sale, Period Increase (Decrease) | 0 | (3,480,000) |
| Flowerfield Properties, Inc. [Member] | ||
| Real Estate, Held-for-sale, Period Increase (Decrease) | $ 3,602,000 | $ 88,000 |