Note 19 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Expense	$ 1,237	$ 1,165	$ 3,285	$ 3,428
Deferred tax benefit	(259)	(245)	(690)	(721)
Total net expense	978	920	2,595	2,707
Stock Appreciation Rights (SARs) [Member]
Expense	94	88	282	264
Deferred tax benefit	(20)	(18)	(59)	(55)
Total net expense	74	70	223	209
Restricted Stock [Member]
Expense	346	312	1,028	978
Deferred tax benefit	(72)	(66)	(216)	(206)
Total net expense	274	246	812	772
Restricted Stock Units (RSUs) [Member]
Expense	80	79	252	233
Deferred tax benefit	(17)	(17)	(53)	(49)
Total net expense	63	62	199	184
Performance Shares [Member]
Expense	717	686	1,723	1,953
Deferred tax benefit	(150)	(144)	(362)	(411)
Total net expense	$ 567	$ 542	$ 1,361	$ 1,542