Note 9 - Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]

	Warrant shares outstanding			Weighted Average exercise price		Weighted Average remaining life		Intrinsic value
Outstanding at January 1, 2021		6,369,396		$	1.97	$	2.48	$	2,784,117
Issued		-
Exercised		(2,004,926	)		1.57		-		-
Expired or cancelled		-			-		-		-
Outstanding and exercisable at September 30, 2021		4,364,470		$	2.15	$	1.76	$	1,088,192

	Warrant shares outstanding			Weighted Average exercise price		Weighted Average remaining life		Intrinsic value
Outstanding at January 1, 2020		1,074,171		$	0.50	$	4.10	$	956,012
Issued		6,459,000			2.01		3.00		-
Exercised		(1,133,975	)		0.87		-		-
Expired or cancelled		-			-		-		-
Outstanding and exercisable at September 30, 2020		6,399,196		$	1.95	$	2.73	$	880,449

Deferred Compensation Arrangement with Individual, Share-based Payments [Table Text Block]

	September 30, 2021			September 30, 2020
Shares-to-be-issued, outstanding January 1, 2021 and 2020, respectively		2,428,329			2,375,762
Granted in current period		33,238			363,956
Issued in current period		(455,906	)		(387,991	)
Shares-to be issued outstanding September 30, 2021 and 2020, respectively		2,005,661			2,351,727

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

	Number of Options			Weighted Averaged Exercise Price $		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Options Value $
Options outstanding January 1, 2021		1,953,443			1.88		3.09		476,964
Granted		2,032,175			2.48		9.48		-
Exercised during 2021		(485,247	)		1.59		-		-
Forfeited or expired		(351,759	)		1.99		-		-
Options outstanding September 30, 2021		3,148,612			2.30		7.14		35,776
Exercisable, September 30, 2021		604,817			1.95		1.90		35,776

	Number of Options			Weighted Averaged Exercise Price $		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Options Value $
Options outstanding January 1, 2020		1,212,442			1.61		2.00		-
Granted		80,000			-		-		-
Exercised during 2020		-			-		-		-
Forfeited or expired		(289,464	)		3.89		-		-
		1,002,978			1.56		1.59		114,570
Exercisable, September 30, 2020		828,370			1.55		1.38		88,983

	Number of Options			Weighted Averaged Exercise Price $		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Options Value $
Options outstanding January 1, 2021		74,997			1.41		3.18		54,748
Granted		16,666			3.94		4.48
Exercised during 2021		(8,333	)		2.34		2.34		-
Options outstanding September 30, 2021		83,330			1.83		3.09		38,082
Exercisable, September 30, 2021		55,553			1.09		2.19		32,860

	Number of Options		Weighted Averaged Exercise Price $		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Options Value $
Options outstanding January 1, 2020		49,998		1.43		2.94		19,333
Granted		24,999		1.70		3.00		-
Exercised during 2020		-		-		-		-
Options outstanding September 30, 2020		74,997		1.52		2.86		19,333
Exercisable, September 30, 2020		52,776		1.57		2.24		14,666

Restricted Stock [Member]

Notes Tables

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

Restricted Stock Awards	Shares			Weighted Average Grant-Date Fair Value per Award
Non-vested as December 31, 2020		-		$	-
Granted		89,285			2.52
Vested		-			-
Cancelled		(11,458	)		-
Non-vested as September 30, 2021		77,827		$	2.52