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Note 9 - Stockholders' Equity (Tables)

6 Months Ended

Jun. 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 June 30, 2021			4,364,470			$	2.15			$	2.01			$	1,796,413

		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			(1,081,475	)			0.88				-				-
Expired or cancelled			-				-				-				-
Outstanding and exercisable at June 30, 2020			6,451,696			$	1.95			$	2.98			$	2,430,184

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

		June 30, 2021				June 30, 2020
Shares-to-be-issued, outstanding January 1, 2021 and 2020, respectively			2,428,329				2,375,760
Granted in current period			33,238				358,482
Issued in current period			(53,416	)			(214,612	)
Shares-to be issued outstanding June 30, 2021 and 2020, respectively			2,408,151				2,519,630

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				-				-
Exercised during 2021			(435,558	)			1.58				-				-
Forfeited or expired			-				-				-				-
Options outstanding June 30, 2021			3,550,060				2.26				7.00				188,018
Exercisable, June 30, 2021			745,092				1.93				2.41				124,701

		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				1.71				2.40				-
Granted			-				-				-				-
Exercised during 2020			-				-				-				-
Forfeited or expired			-				-				-				-
			1,212,442				1.71				2.40				-
Exercisable, June 30, 2020			1,117,829				1.84				1.84				-

		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				4.30
Exercised during 2021			-				-				-				-
Options outstanding June 30, 2021			91,663				1.69				2.87				77664
Exercisable, June 30, 2021			52,769				1.68				2.12				50,658

		Number of Options				Weighted Averaged Exercise Price $				Weighted Average Remaining Contractual Life (Years)				Aggregate Intrinsic Options Value $
Options outstanding January 1, 2020			49,998				1.87				2.94				-
Granted			8,333				1.65								-
Exercised during 2020			-				-				-				-
Options outstanding June 30, 2020			58,331				1.87				2.94
Exercisable, June 30, 2020			41,663				1.71				2.03				84,579

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			79,365				2.52
Vested			-				-
Non-vested as June 30, 2021			79,365			$	2.52

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