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Note 19 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Expense $ 1,032 $ 1,237 $ 3,219 $ 3,285
Deferred tax benefit (216) (259) (676) (690)
Total net expense 816 978 2,543 2,595
Stock Appreciation Rights (SARs) [Member]        
Expense 105 94 310 282
Deferred tax benefit (22) (20) (65) (59)
Total net expense 83 74 245 223
Restricted Stock [Member]        
Expense 399 346 1,204 1,028
Deferred tax benefit (84) (72) (253) (216)
Total net expense 315 274 951 812
Restricted Stock Units (RSUs) [Member]        
Expense 126 80 392 252
Deferred tax benefit (26) (17) (82) (53)
Total net expense 100 63 310 199
Performance Shares [Member]        
Expense 402 717 1,313 1,723
Deferred tax benefit (84) (150) (276) (362)
Total net expense $ 318 $ 567 $ 1,037 $ 1,361