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