Note 8 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

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

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2022			2021			2022			2021
Stock-based compensation expense, gross	$	6		$	4		$	11		$	7
Income tax benefit at our statutory rate associated with stock-based compensation		(2	)		(1	)		(3	)		(1	)
Stock-based compensation expense, net	$	4		$	3		$	8		$	6

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

	Six Months Ended
	June 30, 2022					June 30, 2021
				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)		1,035,728		$	19.69		917,533		$	16.84
Granted (1)		400,927		$	21.68		343,402		$	18.73
Vested		(341,918	)	$	19.03		(580,963	)	$	15.48
Outstanding - end of period (1)		1,094,737		$	20.62		679,972		$	18.96
Restricted stock - Class A common:
Outstanding - beginning of period (1)		720,421		$	18.22		480,042		$	16.10
Granted (1)		250,448		$	20.52		233,425		$	17.67
Vested		(229,758	)	$	16.99		(248,539	)	$	15.00
Outstanding - end of period (1)		741,111		$	19.38		464,928		$	17.47
Restricted stock units - common stock:
Outstanding - beginning of period		125,247		$	19.02		90,184		$	18.92
Granted		259,079		$	23.87		95,115		$	19.05
Vested		(108,921	)	$	19.03		(60,052	)	$	18.92
Forfeited		(1,260	)	$	19.05		-		$	0.00
Outstanding - end of period		274,145		$	23.60		125,247		$	19.02