Note 16 - Pension and Other Benefits - Schedule of Changes in Fair Value of Plan Assets (Details) - Pension Plan [Member] - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Fair value	$ 13,257	$ 17,604	$ 15,868
Fair Value, Inputs, Level 1 [Member]
Fair value	13,257	17,604
Fair Value, Inputs, Level 2 [Member]
Fair value	0	0
Fair Value, Inputs, Level 3 [Member]
Fair value	0	0
Defined Benefit Plan, Cash [Member]
Fair value	262	178
Defined Benefit Plan, Cash [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	262	178
Defined Benefit Plan, Cash [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	0	0
Defined Benefit Plan, Cash [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value	0	0
Defined Benefit Plan, Equity Securities, US [Member]
Fair value	7,611	10,551
Defined Benefit Plan, Equity Securities, US [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	7,611	10,551
Defined Benefit Plan, Equity Securities, US [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	0	0
Defined Benefit Plan, Equity Securities, US [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value	0	0
Defined Benefit Plan, Equity Securities, Non-US [Member]
Fair value	569	897
Defined Benefit Plan, Equity Securities, Non-US [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	569	897
Defined Benefit Plan, Equity Securities, Non-US [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	0	0
Defined Benefit Plan, Equity Securities, Non-US [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value	0	0
Cash and Other Alternative Investments [Member]
Fair value	4,684	5,804
Cash and Other Alternative Investments [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	4,684	5,804
Cash and Other Alternative Investments [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	0	0
Cash and Other Alternative Investments [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value	0	0
Commodity Funds [Member]
Fair value	95	111
Commodity Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	95	111
Commodity Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	0	0
Commodity Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value	0	0
Defined Benefit Plan, Real Estate [Member]
Fair value	36	63
Defined Benefit Plan, Real Estate [Member] | Fair Value, Inputs, Level 1 [Member]
Fair value	36	63
Defined Benefit Plan, Real Estate [Member] | Fair Value, Inputs, Level 2 [Member]
Fair value	0	0
Defined Benefit Plan, Real Estate [Member] | Fair Value, Inputs, Level 3 [Member]
Fair value	$ 0	$ 0