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Note 4 - Other Accrued Liabilities
9 Months Ended
Sep. 30, 2023
Notes to Financial Statements  
Other Liabilities Disclosure [Text Block]

Note 4.    Other Accrued Liabilities

 

Other accrued liabilities consist of the following as of  September 30, 2023 and December 31, 2022:

 

   

September 30,

   

December 31,

 
   

2023

   

2022

 

Insurance

  $ -     $ 591,000  

Professional services

    291,000       92,000  

Operating costs

    782,000       539,000  

Other

    848,000       322,000  

Total other accrued liabilities

  $ 1,921,000     $ 1,544,000