Note 23 - Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

Share-Based Payment Arrangement, Option, Activity [Table Text Block]

	Shares			Weighted-Average Exercise Price Per Share		Aggregate Intrinsic Value (in millions)
Options outstanding, January 1, 2020		1,297,936		$	19.60	$	2.0
Exercised		(63,365	)	$	15.48	$	0.2
Forfeited		(72,250	)	$	16.20
Options outstanding, December 31, 2020		1,162,321		$	20.03	$	-
Exercised		(315,750	)	$	19.19	$	1.1
Forfeited		(357,816	)	$	19.01
Options outstanding, December 31, 2021		488,755		$	21.48	$	1.5
Exercised		(205,871	)	$	20.56	$	0.8
Forfeited		(750	)	$	19.70
Options outstanding, December 31, 2022		282,134		$	22.13	$	-
Options exercisable (fully vested)
December 31, 2020		1,162,321		$	20.03	$	-
December 31, 2021		488,755		$	21.48	$	1.5
December 31, 2022		282,134		$	22.13	$	-

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

	2022			2021			2020
Restricted stock outstanding as of January 1,		2,347,608			2,394,825			2,367,843
Granted (1)		819,090			754,560			820,150
Vested		(511,772	)		(759,665	)		(784,120	)
Forfeited		(48,956	)		(42,112	)		(9,048	)
Restricted stock outstanding as of December 31,		2,605,970			2,347,608			2,394,825

Share-Based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block]

	2022			2021			2020
Performance share awards outstanding as of January 1,		1,052,100			913,800			704,530
Granted (1)		458,660			545,380			506,720
Vested (2)		(506,720	)		(407,080	)		(297,450	)
Performance share awards outstanding as of December 31,		1,004,040			1,052,100			913,800

Performance Shares [Member]

Notes Tables

Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2022			2021			2020
Stock price	$	24.27		$	17.87		$	18.93
Dividend yield (1)		0	%		0	%		0	%
Risk-free rate		1.72	%		0.20	%		1.42	%
Volatility (2)		49.07	%		48.41	%		24.67	%
Term of the award (years)		2.87			2.86			2.88