Note 8 - Stock Options and Restricted Stock (Tables)

12 Months Ended

Dec. 31, 2021

Notes Tables

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

	Shares			Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)
Outstanding as of January 1, 2020		129,689		$	8.45		1.95
Forfeited or expired		(118,120	)		8.54		-
Outstanding as of December 31, 2020		11,569		$	5.87		0.53
Forfeited or expired		(10,235	)		5.91		-
Outstanding as of December 31, 2021		1,334		$	5.55		0.42
Vested as of December 31, 2021		1,334		$	5.55		0.42
Exercisable as of December 31, 2021		1,334		$	5.55		0.42

Schedule of Nonvested Share Activity [Table Text Block]

	Shares			Weighted Average Grant Date Fair Value
Non-vested as of January 1, 2020		3,533		$	3.30
Vested		(1,755	)		3.36
Forfeited		(1,778	)		19.29
Non-vested as of December 31, 2020		-		$	-
Vested		-			-
Forfeited		-			-
Non-vested as of December 31, 2021		-		$	-

Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]

	Shares			Weighted Average Grant Date Fair Value
Restricted shares as of January 1, 2020		133,756			8.25
Granted		10,001			2.49
Vested		(69,777	)		6.56
Forfeited		(49,587	)		8.05
Restricted shares as of December 31, 2020		24,393			7.32
Granted		165,000			1.05
Vested		(6,505	)		7.94
Forfeited		(1,667	)		8.92
Restricted shares as of December 31, 2021		181,221			1.58

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	For the Year Ended December 31,
	2021		2020
Stock options		3,621		93,747
Restricted stock		179,351		58,220
Warrants		1,175,719		314,158
Weighted average		1,358,691		466,125