Note 8 - Stock-based Compensation (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

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

	Three Months Ended March 31,
	2021			2020
Stock-based compensation expense, gross	$	4		$	4
Income tax benefit at our statutory rate associated with stock-based compensation		(1	)		(1	)
Stock-based compensation expense, net	$	3		$	3

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

	Three Months Ended March 31,
	2021					2020
				Weighted-					Weighted-
				Average					Average
	Number			Grant Date		Number			Grant Date
	of			Fair Value		of			Fair Value
	Shares			Per Share		Shares			Per Share
Restricted common stock:
Outstanding - beginning of period		917,533		$	16.84		977,547		$	15.45
Granted (1)		296,042			18.21		248,543			21.69
Forfeited		-			-		(85,630	)		15.53
Vested		(502,241	)		16.10		(260,004	)		14.20
Outstanding - end of period		711,334		$	17.94		880,456		$	17.57
Restricted Class A common stock:
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 units - common stock:
Outstanding - beginning of period		90,184		$	18.92		398,000		$	18.21
Granted		95,115			19.05		90,184			18.92
Vested		(60,052	)		18.92		-			-
Outstanding - end of period		125,247		$	19.02		488,184		$	18.34