Note 22 - Incentive Plans - Performance Shares Activity (Details) - Performance Shares [Member] - shares		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Restricted stock outstanding as of January 1, (in shares)		1,004,040	1,052,100	913,800
Granted (1) (in shares)	[1]	531,200	458,660	545,380
Vested (in shares)	[2]	(545,380)	(506,720)	(407,080)
Restricted stock outstanding as of December 31, (in shares)		989,860	1,004,040	1,052,100

[1] The weighted-average grant date fair value for performance shares issued during the years ended December 31, 2023, 2022 and 2021 were $42.61, $31.19 and $22.96, respectively.

[2] For the years ended December 31, 2023, 2022 and 2021, the corresponding common stock equivalent of these vested awards were 970,231, 998,238 and 814,160 shares, respectively.