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Note 3 - Share-based Compensation (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
   

Three Months Ended

March 31,

 
   

2024

   

2023

 

Restricted share units:

               

Pretax compensation expense

  $ 12,408     $ 12,722  

Tax benefit

    3,214       3,252  

Restricted share unit expense, net of tax

  $ 9,194     $ 9,470  

Performance share units:

               

Pretax compensation expense

  $ 6,001     $ 6,526  

Tax benefit

    1,554       1,668  

Performance share unit expense, net of tax

  $ 4,447     $ 4,858