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 options and restricted stock units, net of forfeited	$	20	$	81
After-tax effect of stock-based compensation	$	20	$	81

Share-based Payment Arrangement, Option, Activity [Table Text Block]

					Weighted- Average
	Number		Weighted-		Remaining		Aggregate
	of		Average		Contractual		Intrinsic
	Options		Exercise Price		Term		Value
Outstanding on January 1, 2021		484,500	$	3.57
Granted		—		—
Exercised		—		—
Expired or forfeited		—		—
Outstanding on March 31, 2021		484,500	$	3.57		3.46	$	307,020
Exercisable on March 31, 2021		484,500	$	3.57		3.46	$	307,020

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

				Weighted Average
				Grant Date
	Shares			Fair Value
Unvested restricted stock units at January 1, 2021		100,005		$	4.08
Granted		—			—
Forfeited		—			—
Vested		(50,002	)		1.50
Unvested restricted stock units at March 31, 2021		50,003		$	6.65