Note 8 - Stock-based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

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

	Year Ended December 31,
	2020			2019			2018
Stock-based compensation expense, gross	$	16		$	16		$	7
Income tax benefit at our statutory rate associated with stock-based compensation		(4	)		(4	)		(2	)
Stock-based compensation expense, net	$	12		$	12		$	5

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

	Year Ended December 31,
	2020					2019					2018
				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		977,547		$	15.45		578,894		$	13.14		503,685		$	11.14
Granted		359,481			18.92		751,463			16.07		391,836			14.63
Vested		(333,865	)		15.35		(352,810	)		12.98		(225,570	)		11.21
Forfeited		(85,630	)		15.53		-			-		(91,057	)		13.27
Outstanding - end of period		917,533		$	16.84		977,547		$	15.45		578,894		$	13.14
Restricted stock - Class A common:
Outstanding - beginning of period		449,284		$	13.55		407,786		$	11.82		462,632		$	10.63
Granted		166,814			19.87		199,810			15.36		220,080			12.65
Vested		(136,056	)		12.32		(158,312	)		11.38		(274,926	)		10.48
Outstanding - end of period		480,042		$	16.10		449,284		$	13.55		407,786		$	11.82
Restricted stock units - common:
Outstanding - beginning of period		398,000		$	18.21		-		$	-		209,500		$	15.70
Granted		93,184			18.77		398,000			18.21		-			-
Vested		(374,500	)		18.18		-			-		(209,500	)		15.70
Forfeited		(26,500	)		18.21		-			-		-			-
Outstanding - end of period		90,184		$	18.92		398,000		$	18.21		-		$	-