Note 20 - Employee Benefit Plans - Schedule of Assumptions Used (Details)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Annual increase in cost of benefits	5.60%	5.50%
Discount rate used to determine year-end obligations	2.00%	1.50%
Discount rate used to determine year-end expense	1.50%	3.50%