Note 6 - Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2023

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, 2023		4,268,221			2.18		0.50		-
Issued		-			-		-		-
Exercised		-			-		-		-
Expired or cancelled		(3,953,649	)		-		-		-
Outstanding and exercisable at June 30, 2023		314,572			0.50		0.60		116,549

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

	June 30, 2023		June 30, 2022
Shares-to-be-issued, outstanding January 1, 2023 and 2022, respectively		2,440,673		2,066,343
Granted in current period		322,092		108,148
Issued in current period		-		(147,338	)
Shares-to be issued outstanding June 30, 2023 and 2022, respectively		2,762,765		2,027,153

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, 2023		3,059,989		2.36		6.38		-
Granted during 2023		-		-				-
Exercised during 2023		-		-		-		-
Forfeited or expired during 2023		-		-		-		-
Options outstanding June 30, 2023		3,059,989		2.36		5.88		-
Exercisable, June 30, 2023		1,481,651		2.29		5.25		-

	Number of Options		Weighted Averaged Exercise Price $		Weighted Average Remaining Contractual Life (Years)		Aggregate Intrinsic Options Value $
Options outstanding January 1, 2023		91,663		1.75		2.55		1,083
Granted during 2023		8,333		0.89		4.99		-
Exercised during 2023		-		-		-		-
Options outstanding June 30, 2023		99,996		1.68		2.29		7,516
Exercisable, June 30, 2023		86,109		1.78		1.96		6,736

Restricted Stock [Member]

Notes Tables

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

	Number of Shares			Weighted Average Grant-Date Fair Value per Award
Non-vested as January 1, 2023		435,293			1.18
Granted		617,978			0.89
Vested		(540,164	)		-
Cancelled		-			-
Non-vested as June 30, 2023		513,107			0.96