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]

	For the Year Ended December 31,
	2021		2020
Stock options and restricted stock units, net of forfeited	$	82	$	290
After-tax effect of stock based compensation	$	82	$	290

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

	2021					2020
	Number of Options			Weighted-Average Exercise Price		Number of Options			Weighted-Average Exercise Price
Outstanding at beginning of year		484,500		$	3.57		747,500		$	3.33
Granted		—			—		—			—
Exercised		—			—		(183,000	)		1.61
Expired or forfeited		(50,000	)		8.16		(80,000	)		5.79
Outstanding at end of year		434,500		$	3.05		484,500		$	3.57
Exercisable at end of year		434,500		$	3.05		484,500		$	3.57
Weighted-Average Remaining Contractual Life (years)					3.08					3.70
Aggregate Intrinsic Value				$	38				$	488

Share-based Payment Arrangement, Option, Exercise Price Range [Table Text Block]

Options Outstanding and Exercisable
Range of Exercise Prices	Number of Options		Weighted-Average Remaining Contractual Life (years)		Weighted-Average Exercise Price
$0.96 - $1.27		88,000		5.9	$	0.97
$1.28 - $3.00		132,000		3.6		2.26
$3.01 - $4.54		120,000		1.0		3.72
$4.55 - $5.22		94,500		2.4		5.22
		434,500		3.1	$	3.05

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

	Shares			Weighted Average Grant Date Fair Value
Unvested restricted stock units at December 31, 2019		775,635		$	1.47
Forfeited		(70,000	)		1.03
Vested		(605,630	)		1.09
Unvested restricted stock units at December 31, 2020		100,005			1.50
Forfeited		(5,000	)		0.97
Vested		(50,002	)		1.50
Unvested restricted stock units at December 31, 2021		45,003		$	1.51