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Note 19 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Expense $ 1,008 $ 1,035 $ 1,950 $ 2,187
Deferred tax benefit (213) (217) (410) (460)
Total net expense 795 818 1,540 1,727
Stock Appreciation Rights (SARs) [Member]        
Expense 72 105 140 205
Deferred tax benefit (16) (22) (30) (43)
Total net expense 56 83 110 162
Restricted Stock [Member]        
Expense 418 394 838 806
Deferred tax benefit (88) (82) (176) (169)
Total net expense 330 312 662 637
Restricted Stock Units (RSUs) [Member]        
Expense 125 133 249 265
Deferred tax benefit (26) (28) (52) (56)
Total net expense 99 105 197 209
Performance Shares [Member]        
Expense 393 403 723 911
Deferred tax benefit (83) (85) (152) (192)
Total net expense $ 310 $ 318 $ 571 $ 719