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Note 4 - Fair Value Measurements (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
   

March 31, 2023

 
   

Level 1

   

Level 2

   

Level 3

   

Total

 

Assets:

                               

Non-current accounts receivable, net

  $ -     $ 9,177     $ -     $ 9,177  

Liabilities:

                               

Finance lease liabilities

    -       14,516       -       14,516  
   

December 31, 2022

 
   

Level 1

   

Level 2

   

Level 3

   

Total

 

Assets:

                               

Non-current accounts receivable, net

  $ -     $ 9,688     $ -     $ 9,688  

Liabilities:

                               

Finance lease liabilities

    -       14,820       -       14,820