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Note 7 - Share-based Compensation (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  

Three Months Ended June 30,

  

Six Months Ended June 30,

 
  

2022

  

2021

  

2022

  

2021

 

Stock options and SARs

 $381  $326  $741  $778 

Restricted stock

  985   435   1,604   638 

Performance shares

  (124)  76   109   253 

Total share-based compensation expense

 $1,242  $837  $2,454  $1,669 
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
        Weighted Average  Aggregate 
  

No. of

  

Weighted Average

  

Remaining Life

  

Intrinsic Value

 
  

Shares

  

Exercise Price

  

(in years)

  

(in thousands)

 

Outstanding, January 1, 2022

  779,938  $16.12   3.27  $5,097 

Granted(1)

  103,203   20.13         

Exercised

  (53,417)  11.95         

Lapsed or cancelled

  (7,572)  17.89         

Outstanding, June 30, 2022

  822,152   16.88   3.13   2,608 

Exercisable, June 30, 2022

  550,456   13.96   2.58   2,608 
Share-Based Payment Arrangement, Stock Appreciation Right, Activity [Table Text Block]
        Weighted Average  Aggregate 
  

No. of

  

Weighted Average

  

Remaining Life

  

Intrinsic Value

 
  

Shares

  

Exercise Price

  

(in years)

  

(in thousands)

 

Outstanding, January 1, 2022

  291,059  $14.99   2.65  $2,205 

Granted(1)

  37,297   20.13         

Exercised

  (24,836)  15.16         

Lapsed or cancelled

  (2,308)  16.97         

Outstanding, June 30, 2022

  301,212   15.60   2.63   1,208 

Exercisable, June 30, 2022

  232,228   13.48   2.18   1,208 
Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]
      

Weighted Average

 
  

No. of

  

Grant Date

 
  

Shares

  

Fair Value

 

Outstanding, January 1, 2022

  458,166  $19.51 

Granted

  30,343   19.97 

Vested

  (113,039)  15.22 

Forfeited

  (8,500)  13.11 

Outstanding, June 30, 2022

  366,970   21.02 
Schedule of Nonvested Performance-Based Units Activity [Table Text Block]
      

Weighted Average

 
  

No. of

  

Grant Date

 
  

Shares

  

Fair Value

 

Outstanding, January 1, 2022

  193,523  $21.50 

Granted

  59,578   19.55 

Vested

  (15,750)  16.97 

Forfeited

  (37,300)  24.98 

Outstanding, June 30, 2022

  200,051   20.63