Note 20 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Expense	$ 1,152	$ 991
Deferred tax benefit	(243)	(209)
Total net expense	909	782
Stock Appreciation Rights (SARs) [Member]
Expense	99	94
Deferred tax benefit	(21)	(20)
Total net expense	78	74
Restricted Stock [Member]
Expense	412	330
Deferred tax benefit	(87)	(70)
Total net expense	325	260
Restricted Stock Units (RSUs) [Member]
Expense	132	86
Deferred tax benefit	(28)	(18)
Total net expense	104	68
Performance Shares [Member]
Expense	509	481
Deferred tax benefit	(107)	(101)
Total net expense	$ 402	$ 380