Note 8 - Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Schedule of Preferred Stock [Table Text Block]

	December 31, 2020				December 31, 2019
			Carrying				Carrying
	Shares		Value		Shares		Value
Series B Convertible Preferred Stock		100	$	76,095		100	$	76,095
Series H Convertible Preferred Stock		-		-		1,686		1,156,338
Series I Convertible Preferred Stock		-		-		700		700,000
Total		100	$	76,095		2,486	$	1,932,433

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	2020			2019
Weighted average risk-free interest rates		0.69	%		N/A
Expected dividend yield		0.0	%		N/A
Expected life of option (years)	7.0				N/A
Expected volatility		38.16	%		N/A

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

	Number of Shares		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (yrs)		Aggregate Intrinsic Value
Outstanding at December 31, 2019		-	$	-
Granted		602,000		2.79
Exercised		-		-
Forfeited or expired		-		-
Outstanding at December 31, 2020		602,000	$	2.79		9.9	$	355,180
Exercisable at December 31, 2020		-0-	$	-		-	$	-

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

Warrant Description	Number of Shares		Exercise Price		Expiration
Series I Warrants		62,626	$	5.00	Oct-Dec 2024
June 2020 Warrants		120,000		5.00	Jun 2025
Pre-Funded Warrants		126,042		0.01	Perpetual
Unit, Conversion and Management Warrants		3,163,669		5.00	Sep 2025
Representative Warrants		128,000		5.50	Mar 2024
Total Warrants Outstanding at December 31, 2020		3,600,337
Weighted-Average Exercise Price	$	4.84
Weighted-Average Remaining Life (excluding Pre-Funded Warrants) (years)	4.7