Note 22 - Incentive Plans - Restricted Stock Activity (Details) - Restricted Stock [Member] - shares		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restricted stock outstanding as of January 1, (in shares)		2,394,825	2,367,843	2,104,914
Granted (1) (in shares)	[1]	754,560	820,150	884,170
Vested (in shares)		(759,665)	(784,120)	(603,148)
Forfeited (in shares)		(42,112)	(9,048)	(18,093)
Restricted stock outstanding as of December 31, (in shares)		2,347,608	2,394,825	2,367,843

[1] The weighted-average grant date fair value for restricted stock issued during the years ended December 31, 2021, 2020 and 2019 were $17.81, $18.67 and $18.03, respectively.