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]

	For the Year Ended December 31,
	2020		2019
Stock options	$	—	$	—
Restricted stock units		290		574
Total stock-based compensation expense		290		574
Tax benefit of stock-based compensation expense		—		—
After-tax effect of stock based compensation	$	290	$	574

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

	2020					2019
	Number of Options			Weighted-Average Exercise Price		Number of Options			Weighted-Average Exercise Price
Outstanding at beginning of year		747,500		$	3.33		932,500		$	4.68
Exercised		(183,000	)		1.61		—			—
Expired or forfeited		(80,000	)		5.79		(185,000	)		10.14
Outstanding at end of year		484,500		$	3.57		747,500		$	3.33
Exercisable at end of year		484,500		$	3.57		747,500		$	3.33
Weighted-average fair value of options granted during the year				$	—				$	—
Weighted-Average Remaining Contractual Life (years)					3.70					4.73
Aggregate Intrinsic Value				$	—				$	—

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
0.966 -1.2727		88,000		6.9	$	0.97
1.288 -3.0000		132,000		4.6		2.26
3.011 -4.5454		120,000		2.0		3.72
4.555 -8.1616		144,500		2.4		6.24
		484,500		3.7	$	3.57

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

	Shares			Weighted Average Grant Date Fair Value
Unvested restricted stock units at December 31, 2018		1,110,277			1.21
Granted		228,135			1.52
Vested		(562,777	)		0.98
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			4.08