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Note 4 - Other Accrued Liabilities
3 Months Ended
Mar. 31, 2023
Notes to Financial Statements  
Other Liabilities Disclosure [Text Block]

Note 4.    Other Accrued Liabilities

 

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

 

  

March 31,

  

December 31,

 
  

2023

  

2022

 

Insurance

 $363,000  $591,000 

Professional services

  174,000   92,000 

Operating costs

  620,000   539,000 

Other

  321,000   322,000 

Total other accrued liabilities

 $1,478,000  $1,544,000