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 6 Months Ended 12 Months Ended
Jun. 30, 2003
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Dec. 31, 2023
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Self-insured retention       $ 100,000    
Restricted cash, noncurrent   $ 12,372,000   12,372,000   $ 12,074,000
Interest income   213,000 $ 172,000 387,000 $ 298,000  
Letters of credit outstanding, amount   3,950,000   3,950,000    
Bond outstanding   21,976,000   21,976,000    
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   23,379,000   23,379,000    
Restricted cash, noncurrent   12,372,000   12,372,000   12,074,000
Interest income   $ 150,000 $ 143,000 $ 298,000 $ 210,000  
Insurers obligation to entity on termination of contract   100.00%   100.00%    
American International Group, Inc [Member] | Finite Risk Sinking Funds [Member]            
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]            
Interest income       $ 2,901,000   $ 2,603,000