Note 20 - Employee Benefit Plans - Schedule of Post-retirement Medical Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Pension and postretirement benefit obligations	$ 1,093	$ 1,292
Amount recognized in other comprehensive income (loss)	(83)	(20)
Postretirement Health Coverage [Member]
Projected benefit obligation, balance	453	453
Interest cost	6	15
Actuarial loss	(38)	55
Participant contributions	4	10
Benefits paid	(69)	(80)
Projected benefit obligation, balance	356	453
Employer contributions	65	70
Participant contributions	4	10
Benefits paid	(69)	(80)
Funded status	(356)	(453)
Current liabilities	58	71
Pension and postretirement benefit obligations	298	382
Net amount recognized	356	453
Amount recognized in other comprehensive income (loss)	120	76
Amount recognized in the consolidated statement of operations	236	377
Total	$ 356	$ 453