Note 8 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

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

	Year Ended December 31,
	2021			2020			2019
Stock-based compensation expense, gross	$	14		$	16		$	16
Income tax benefit at our statutory rate associated with stock-based compensation		(4	)		(4	)		(4	)
Stock-based compensation expense, net	$	10		$	12		$	12

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

	Year Ended December 31,
	2021					2020					2019
				Weighted-					Weighted-					Weighted-
				Average					Average					Average
	Number			Grant Date		Number			Grant Date		Number			Grant Date
	of			Fair Value		of			Fair Value		of			Fair Value
	Shares			Per Share		Shares			Per Share		Shares			Per Share
Restricted stock - common:
Outstanding - beginning of period		917,533		$	16.84		977,547		$	15.45		578,894		$	13.14
Granted		731,374			19.73		359,481			18.92		751,463			16.07
Vested		(613,179	)		15.48		(333,865	)		15.35		(352,810	)		12.98
Forfeited		-			-		(85,630	)		15.53		-			-
Outstanding - end of period		1,035,728		$	19.69		917,533		$	16.84		977,547		$	15.45
Restricted stock - Class A common:
Outstanding - beginning of period		480,042		$	16.10		449,284		$	13.55		407,786		$	11.82
Granted		488,918			18.66		166,814			19.87		199,810			15.36
Vested		(248,539	)		15.00		(136,056	)		12.32		(158,312	)		11.38
Outstanding - end of period		720,421		$	18.22		480,042		$	16.10		449,284		$	13.55
Restricted stock units - common:
Outstanding - beginning of period		90,184		$	18.92		398,000		$	18.21		-		$	-
Granted		95,115			19.05		93,184			18.77		398,000			18.21
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		398,000		$	18.21