Note 8 - Stock-based Compensation (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

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

	Three Months Ended						Nine Months Ended
	September 30,						September 30,
	2021			2020			2021			2020
Stock-based compensation expense, gross	$	3		$	5		$	10		$	12
Income tax benefit at our statutory rate associated with share-based compensation		(1	)		(1	)		(3	)		(3	)
Stock-based compensation expense, net	$	2		$	4		$	7		$	9

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

	Nine Months Ended
	September 30, 2021					September 30, 2020
				Weighted-					Weighted-
				average					average
				Grant Date					Grant Date
	Number of			Fair Value		Number of			Fair Value
	Shares			Per Share		Shares			Per Share
Restricted stock - class A common:
Outstanding - beginning of period		480,042		$	16.10		449,284		$	13.55
Granted(1)		233,425		$	17.67		166,814		$	19.87
Vested		(248,539	)	$	15.00		(136,056	)	$	12.32
Outstanding - end of period		464,928		$	17.47		480,042		$	16.10
Restricted stock - common:
Outstanding - beginning of period		917,533		$	16.84		977,547		$	15.45
Granted(1)		343,402		$	18.73		359,481		$	18.92
Vested		(613,179	)	$	15.48		(333,865	)	$	15.35
Forfeited		-		$	-		(85,630	)	$	15.53
Outstanding - end of period		647,756		$	19.13		917,533		$	16.84
Restricted stock units - common stock:
Outstanding - beginning of period		90,184		$	18.92		398,000		$	18.21
Granted		95,115		$	19.05		93,184		$	18.77
Vested		(60,052	)	$	18.92		(374,500	)	$	18.18
Forfeited		-		$	-		(26,500	)	$	18.21
Outstanding - end of period		125,247		$	19.02		90,184		$	18.92