Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details Narrative)

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Commitments and Contingencies (Details Narrative) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2003
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Self-insured retention       $ 100,000    
Finite risk sinking fund   $ 11,469,000   11,469,000   $ 11,446,000
Interest income   2,000 $ 28,000 23,000 $ 112,000  
Letters of credit outstanding, amount   3,020,000   3,020,000    
Bond outstanding   50,092,000   50,092,000    
American International Group, Inc [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Period of finite risk insurance policy 25 years          
Maximum allowable coverage of insurance policy   28,177,000   28,177,000    
Coverage amount under the policy   19,898,000   19,898,000    
Interest income   $ 2,000 $ 28,000 $ 23,000 $ 111,000  
Insurers obligation to entity on termination of contract   100.00%   100.00%    
American International Group, Inc [Member] | 2003 Closure Policy [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Finite risk sinking fund   $ 11,469,000   $ 11,469,000   11,446,000
Interest income       $ 1,998,000   $ 1,975,000