Note 19 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Expense	$ 1,057	$ 1,414	$ 2,048	$ 2,263
Deferred tax benefit	(222)	(297)	(431)	(476)
Total net expense	835	1,117	1,617	1,787
Stock Appreciation Rights (SARs) [Member]
Expense	94	86	187	175
Deferred tax benefit	(19)	(18)	(39)	(37)
Total net expense	75	68	148	138
Restricted Stock [Member]
Expense	350	337	682	666
Deferred tax benefit	(74)	(71)	(144)	(140)
Total net expense	276	266	538	526
Restricted Stock Units (RSUs) [Member]
Expense	87	78	172	154
Deferred tax benefit	(18)	(16)	(36)	(32)
Total net expense	69	62	136	122
Performance Shares [Member]
Expense	526	913	1,007	1,268
Deferred tax benefit	(111)	(192)	(212)	(267)
Total net expense	$ 415	$ 721	$ 795	$ 1,001