Note 13 - Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2022

Notes Tables

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

						Weighted
				Weighted		Average
				Average		Remaining		Aggregate
				Exercise		Contractual		Intrinsic
	Options			Price		Term		Value
Stock Options						(years)		(millions)
Balance at December 31, 2021		1,753,145		$	25.10		0.9	$	—
Forfeited or expired		(891,977	)		21.01
Balance at December 31, 2022		861,168		$	29.33		0.5	$	—
At December 31, 2022
Options outstanding, vested and exercisable		861,168		$	29.33		0.5	$	—
Options outstanding, vested and expected to vest		861,168		$	29.33		0.5	$	—

Nonvested Restricted Stock Shares Activity [Table Text Block]

				Weighted
				Average
				Grant-Date
	Shares			Fair Value
Restricted Stock Awards
Nonvested at December 31, 2021		119,782		$	10.68
Granted		97,030			12.21
Vested		(119,782	)		10.68
Nonvested at December 31, 2022		97,030		$	12.21

Share-based Compensation Arrangement by Share-based Payment Award, Other Than Options, Grants in Period, Weighted Average Grant Date Fair Value [Table Text Block]

	Year Ended December 31,
	2022		2021		2020
Restricted Stock Awards
Weighted-average, grant-date fair value of awards granted	$	12.21	$	10.68	$	4.59
Total fair value of restricted stock vested		1,409,251		1,979,267		396,935

	Year Ended December 31,
	2022		2021		2020
Restricted Stock Unit Awards
Weighted-average, grant-date fair value of awards granted	$	7.66	$	9.30	$	8.30
Total fair value of restricted stock units vested		5,950,613		9,294,617		7,918,337

	Year Ended December 31,
	2022		2021		2020
Performance Share Unit Awards
Weighted-average, grant-date fair value of awards granted	$	8.96	$	11.86	$	12.25
Total fair value of performance share units vested		—		957,770		2,328,350

Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]

				Weighted
				Average
				Grant-Date
	Shares			Fair Value
Restricted Stock Unit Awards
Nonvested at December 31, 2021		1,627,676		$	10.28
Granted		1,025,160			7.66
Vested		(695,265	)		11.28
Forfeited		(73,761	)		7.88
Nonvested at December 31, 2022		1,883,810		$	8.59

Schedule of Nonvested Performance-Based Units Activity [Table Text Block]

				Weighted
				Average
				Grant-Date
	Shares			Fair Value
Performance Share Unit Awards
Nonvested at December 31, 2021		688,167		$	13.94
Granted		423,896			8.96
Forfeited		(131,797	)		18.31
Nonvested at December 31, 2022		980,266		$	10.64

Share-Based Payment Arrangement, Cost by Plan [Table Text Block]

	Year Ended December 31,
	2022		2021		2020
Equity-based compensation expense:
Restricted stock awards		2		1		1
Restricted stock unit awards		7		10		10
Performance share unit awards		4		1		1
Total equity-based compensation expense	$	13	$	12	$	12
Income tax benefits related to equity-based compensation	$	2	$	2	$	2

Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block]

	Weighted-
	Average Vesting		December 31,
	Period (in years)		2022
Unrecognized equity-based compensation expense:
Restricted stock awards		0.4	$	1
Restricted stock unit awards		0.8		7
Performance share unit awards		0.9		4
Total unrecognized equity-based compensation expense			$	12