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Note 11 - Deferred Compensation Plan (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits by Title of Individual and Type of Deferred Compensation [Table Text Block]
  

September 30,

  

December 31,

 
  

2020

  

2019

 

Deferred compensation plan asset components:

        

Cash surrender value of corporate-owned life insurance policies

 $17,833  $16,883 

Fair value of mutual funds and money market funds

  23,562   21,975 

Total

 $41,395  $38,858 
         

Deferred compensation plan assets reported in:

        

Other long-term assets

 $41,395  $38,858 
         

Deferred compensation plan liabilities reported in:

        

Accrued compensation and related benefits (short-term)

 $155  $425 

Other long-term liabilities

  43,372   39,665 

Total

 $43,527  $40,090