Note 15 - Loss From Continuing Operations Per Share - Antidilutive Earnings (Loss) Per Share (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Antidilutive securities (in shares)	6,956,740	6,566,740	6,956,740	6,566,740
Restricted Stock [Member]
Antidilutive securities (in shares)	1,240,000	500,000	1,240,000	500,000
Warrant [Member]
Antidilutive securities (in shares)	4,573,765	4,923,765	4,573,765	4,923,765
Convertible Debt Securities [Member]
Antidilutive securities (in shares)	1,142,975	1,142,975	1,142,975	1,142,975