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Note 10 - Related Party Transactions (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Schedule of Related Party Transactions [Table Text Block]
  

Three Months Ended June 30,

  

Six Months Ended June 30,

 
  

2023

  

2022

  

2023

  

2022

 

Equipment purchases and de-install costs

 $1,217,000  $131,000  $1,418,000  $1,363,000 

Costs incurred to maintain equipment

  295,000   279,000   590,000   548,000 

Total related party transactions

 $1,512,000  $410,000  $2,008,000  $1,911,000 
  

June 30,

  

December 31,

 
  

2023

  

2022

 

Accounts payable, asset retirement obligation and other accrued liabilities

 $2,091,000  $857,000