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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, 2019 | Dec. 31, 2018
Estimated net inflows from investment of real estate |  | $ 3,418,285 | $ 4,044,202 |
Estimated net inflows from investment of real estate |  | (2,600,047) | (2,386,428) |
Estimated net inflows from investment of real estate |  | 3,491,090 | (1,760,511) |
Property operating costs |  | (2,084,955) | (2,403,872) |
Property operating costs |  | 1,536,010 | 1,495,664 |
Property operating costs |  | (2,046,009) | (1,176,747) |
Tenant improvements |  | (465,844) | (1,304,109) |
Tenant improvements |  | 497,207 | 1,316,567 |
Tenant improvements |  | (31,363) | (478,302) |
Common area capital expenditures |  | (665,000) | (500,000) |
Common area capital expenditures |  | 119,023 | 71,075 |
Common area capital expenditures |  | 71,844 | (236,075) |
Land entitlement costs |  | (1,468,474) | (2,516,394) |
Land entitlement costs |  | 1,422,192 | 1,261,048 |
Land entitlement costs |  | (1,800,845) | (213,128) |
Corporate expenditures |  | (4,904,367) | (5,650,775) |
Corporate expenditures |  | 2,167,814 | 2,213,047 |
Corporate expenditures |  | (3,459,998) | (1,466,639) |
Selling costs on real estate assets* |  | (2,437,076) | (1,981,000) |
Selling costs on real estate assets* |  |  | 79,438 |
Selling costs on real estate assets* |  | (1,060,124) | (535,514) |
Retention bonus payments to directors, officers and employees* | [1] | (1,984,733) | (642,259) |
Retention bonus payments to directors, officers and employees* |  | 14,573 | 86,917 | [1]
Retention bonus payments to directors, officers and employees* |  | (2,710,358) | (1,429,391) | [1]
Less prepaid expenses and other assets |  | 397,854 | 304,294 |
Less prepaid expenses and other assets |  | 234,620 | 93,560 |
Liability for estimated costs in excess of estimated receipts during liquidation** | [2] | (10,194,310) | (10,649,913) |
Liability for estimated costs in excess of estimated receipts during liquidation** |  | 3,391,392 | 4,230,888 | [2]
Liability for estimated costs in excess of estimated receipts during liquidation** |  | (7,545,763) | (3,775,285) | [2]
Estimated net inflows from investment of real estate |  | (3,491,090) | 1,760,511 |
Estimated net inflows from investment of real estate |  | 4,309,328 | 3,418,285 |
Property operating costs |  | (2,594,954) | (2,084,955) |
Tenant improvements |  |  | (465,844) |
Common area capital expenditures |  | (474,133) | (665,000) |
Land entitlement costs |  | (1,847,127) | (1,468,474) |
Corporate expenditures |  | (6,196,551) | (4,904,367) |
Selling costs on real estate assets* |  | (3,497,200) | (2,437,076) |
Retention bonus payments to directors, officers and employees* |  | (2,710,358) | (1,429,391) | [1]
Retention bonus payments to directors, officers and employees* |  | (4,680,518) | (1,984,733) | [1]
Less prepaid expenses and other assets |  | 632,474 | 397,854 |
Liability for estimated costs in excess of estimated receipts during liquidation** |  | (7,545,763) | (3,775,285) | [2]
Liability for estimated costs in excess of estimated receipts during liquidation** |  | $ (14,348,681) | $ (10,194,310) | [2]
[1] | 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.
[2] | These estimates were based on the liquidation being completed by the end of 2019.

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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X
- 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 retention bonus payments to executives 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 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 common area expenditure to reflect the change in value under liquidation basis. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of investment in real estate to reflect the change in value under liquidation basis. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of 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 gain (loss) from remeasurement of corporate expenditures to reflect the change in value under liquidation basis. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of land entitlement costs to reflect the change in value under liquidation basis. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of property operating costs to reflect the change in value under liquidation basis. + 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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- Definition Amount of gain (loss) from remeasurement of selling costs on real estate assets to reflect the change in value under liquidation basis. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of tenant improvements to reflect the change in value under liquidation basis. + References No definition available. + Details
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- Definition Amount of gain (loss) from remeasurement of tenant improvements to dispose of assets or other items expected to be sold in liquidation. + References No definition available. + Details
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