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Note 4 - Fair Value Measurements (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
  

September 30, 2022

 
  

Level 1

  

Level 2

  

Level 3

  

Total

 

Assets:

                

Non-current accounts receivable, net

 $-  $10,195  $-  $10,195 

Liabilities:

                

Finance lease liabilities

  -   14,264   -   14,264 
  

December 31, 2021

 
  

Level 1

  

Level 2

  

Level 3

  

Total

 

Assets:

                

Investments:

                

Cash surrender value of life insurance policies-

                

Deferred compensation plan

 $-  $18,857  $-  $18,857 

Non-current accounts receivable, net

  -   11,531   -   11,531 

Liabilities:

                

Deferred compensation plan

  -   9,339   -   9,339 

Finance lease liabilities

  -   16,919   -   16,919