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Note 4 - Estimated Liquidation and Operating Costs Net of Estimated Receipts - Changes in Liability for Estimated Costs in Excess of Estimated Receipts (Details) - Basis of Accounting, Liquidation [Member] - USD ($) | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Estimated rents and reimbursements |  | $ 4,309,328 |  | $ 3,418,285 |
Estimated rents and reimbursements |  | (2,432,540) |  | (2,600,047) |
Estimated rents and reimbursements |  | 3,049,860 |  | 3,491,090 |
Estimated rents and reimbursements |  | 4,926,648 |  | 4,309,328 |
Property operating costs |  | (2,594,954) |  | (2,084,955) |
Property operating costs |  | 1,506,037 |  | 1,536,010 |
Property operating costs |  | (1,972,487) |  | (2,046,009) |
Property operating costs |  | (3,061,404) |  | (2,594,954) |
Capital expenditures |  | (474,133) |  | (1,130,844) |
Capital expenditures |  | 13,495 |  | 616,230 |
Capital expenditures |  |  |  | 40,481 |
Capital expenditures |  | (460,638) |  | (474,133) |
Land entitlement costs |  | (1,847,127) |  | (1,468,474) |
Land entitlement costs |  | 1,013,966 |  | 1,422,192 |
Land entitlement costs |  | (657,538) |  | (1,800,845) |
Land entitlement costs |  | (1,490,699) | [1] | (1,847,127) |
Corporate expenditures |  | (6,196,551) |  | (4,904,367) |
Corporate expenditures |  | 2,139,978 |  | 2,167,814 |
Corporate expenditures |  | (2,287,769) |  | (3,459,998) |
Corporate expenditures |  | (6,344,342) |  | (6,196,551) |
Selling costs on real estate assets** | [2] | (3,497,200) |  | (2,437,076) |
Selling costs on real estate assets** |  |  | [3] |  | [2]
Selling costs on real estate assets** |  | 439,203 | [3] | (1,060,124) | [2]
Selling costs on real estate assets** |  | (3,057,997) | [3] | (3,497,200) | [2]
Retention bonus payments to directors, officers and employees** | [2] | (4,680,518) |  | (1,984,733) |
Retention bonus payments to directors, officers and employees** |  |  | [3] | 14,573 | [2]
Liquidation Basis of Accounting, Remeasurement Gain (Loss) on Liability Retention Bonus Payments to Executives and Other Employees |  | 1,767,038 | [3] | (2,710,358) | [2]
Retention bonus payments to directors, officers and employees** |  | (2,913,480) | [3] | (4,680,518) | [2]
Less prepaid expenses and other assets |  | 603,679 |  | 397,854 |
Less prepaid expenses and other assets |  | 245,293 |  | 205,825 |
Less prepaid expenses and other assets |  | 848,972 |  | 603,679 |
Liability for estimated liquidation and operating costs net of estimated receipts |  | (14,377,476) |  | (10,194,310) |
Liability for estimated liquidation and operating costs net of estimated receipts |  | 2,486,229 |  | 3,362,597 |
Liability for estimated liquidation and operating costs net of estimated receipts |  | 338,307 |  | (7,545,763) |
Liability for estimated liquidation and operating costs net of estimated receipts |  | $ (11,552,940) |  | $ (14,377,476) |
[1] | The Company reached agreements with certain service vendors to defer payment of approximately $321,000 of the $1.5 million until the closing of the first property lot sale that is the subject of either the Flowerfield or Cortlandt Manor subdivision, respectively.
[2] | The amounts reported are based on the provisions of the retention bonus plan and the reported amount of the real estate assets estimated net realizable value.
[3] | The amounts reported are based on the provisions of the retention bonus plan and the reported amount of the real estate assets estimated net realizable value. Based on the estimated real estate value of the Cortlandt property, aggregate proceeds from the sale of the two Cortlandt lots would not exceed the adjusted floor under the retention bonus plan and therefore the above table only reflects the projected bonus from the sale of the Flowerfield property.

X
- Definition Amount of estimated accrued corporate expenditures to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of estimated accrued land entitlement costs to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of estimated accrued property operating expenses to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of estimated accrued real estate selling costs to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of estimated accrued rent and reimbursements to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of estimated accrued retention bonus payments to executive and other employees to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of estimated common area expenditures to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of increase (decrease) in prepaid expenses, and assets classified as other in a liquidation basis of accounting. + References No definition available. + Details
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- Definition Amount of prepaid expenses and other assets in the liquidation basis of accounting. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of estimated accrued corporate expenditures to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of estimated accrued investment of real estate to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of estimated accrued land entitlement costs to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of estimated accrued property operating costs to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of estimated accrued selling costs on real estate assets to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of retention bonus payments to executives and other employees to reflect the change in value under liquidation basis. + References No definition available. + Details
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