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Note 7 - Real Estate (Tables) | 12 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Real Estate Properties [Table Text Block] |
|  | 2019 |  |  | 2018 |
Net Realizable Value at beginning of period |  | $ | 36,201,270 |  |  | $ | 33,016,665 |
Increases in Net Realizable Value |  |  |  |  |  |  |  |
Cortlandt Manor |  |  | 2,010,000 |  |  |  | 1,040,000 |
Flowerfield |  |  | 10,058,730 |  |  |  | 2,944,605 |
Less Property Sales |  |  |  |  |  |  |  |
Port Jefferson Professional Park |  |  | - |  |  |  | (800,000 | )
Net Realizable Value at December 31, |  | $ | 48,270,000 |  |  | $ | 36,201,270 |

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