Note 8 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2023			2022			2023			2022
Stock-based compensation expense, gross	$	7		$	6		$	9		$	11
Income tax benefit at our statutory rate associated with stock-based compensation		(2	)		(2	)		(2	)		(3	)
Stock-based compensation expense, net	$	5		$	4		$	7		$	8

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

	Six Months Ended
	June 30, 2023					June 30, 2022
				Weighted-					Weighted-
				average					average
				Grant Date					Grant Date
	Number of			Fair Value		Number of			Fair Value
	Shares			Per Share		Shares			Per Share
Restricted stock - common:
Outstanding - beginning of period (1)		997,745		$	20.62		1,035,728		$	19.69
Granted (1)		1,007,921		$	8.15		400,927		$	21.68
Vested		(461,953	)	$	20.27		(341,918	)	$	19.03
Outstanding - end of period (1)		1,543,713		$	12.58		1,094,737		$	20.62
Restricted stock - Class A common:
Outstanding - beginning of period (1)		677,238		$	19.36		720,421		$	18.22
Granted (1)		738,854		$	8.34		250,448		$	20.52
Vested		(203,986	)	$	18.76		(229,758	)	$	16.99
Outstanding - end of period (1)		1,212,106		$	12.74		741,111		$	19.38
Restricted stock units - common stock:
Outstanding - beginning of period		274,145		$	23.60		125,247		$	19.02
Granted		587,168		$	11.50		259,079		$	23.87
Vested		(247,953	)	$	23.64		(108,921	)	$	19.03
Forfeited		(26,192	)	$	23.15		(1,260	)	$	19.05
Outstanding - end of period		587,168		$	11.50		274,145		$	23.60