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Note 4 - Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
  

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 
  

December 31, 2020

 
  

Level 1

  

Level 2

  

Level 3

  

Total

 

Assets:

                

Non-current accounts receivable, net

 $-  $11,321  $-  $11,321 

Liabilities:

                

Finance lease liabilities

  -   18,194   -   18,194 
Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block]
  

2020

  

2019

 

Goodwill

 $191,893  $26,422 

Intangible assets, net

  60,394   17,901 

Property, plant and equipment, net

  19,993   4,713 

Operating lease right-of-use assets

  15,174   - 

Total

 $287,454  $49,036