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Note 4 - Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
  

December 31, 2022

  

Level 1

 

Level 2

 

Level 3

 

Total

Assets:

                

Investments:

                

Non-current accounts receivable, net

 $- $9,688 - $9,688

Liabilities:

                

Finance lease liabilities

 - 14,820 - 14,820
  

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
Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block]
  

Year Ended December 31,

 
  

2020

 

Goodwill

 $191,893 

Intangible assets, net

  60,394 

Property, plant and equipment, net

  19,993 

Operating lease right-of-use assets

  15,174 

Total

 $287,454