Note 17 - Stock Based Compensation - Restricted Stock Award Activity (Details) - Restricted Stock [Member] - $ / shares	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Non-vested, number of share (in shares)			425,000	2,025,000	2,025,000
Non-vested, weighted average grant date fair value (in dollars per share)			$ 1.01	$ 0.76	$ 0.76
Non-vested, weighted average remaining contractual term (Year)			9 months	1 year 4 months 9 days	1 year 6 months	1 year 6 months 14 days
Granted, number of share (in shares)	500,000	162,500	12,559,291	387,500
Granted, weighted average grant date fair value (in dollars per share)			$ 1.28	$ 0.72
Vested, number of share (in shares)	(575,000)	(500,000)	(12,784,291)	(1,737,500)
Vested, weighted average grant date fair value (in dollars per share)			$ 1.27	$ 0.71
Forfeited, number of share (in shares)			0	0
Forfeited, weighted average grant date fair value (in dollars per share)			$ 0	$ 0
Non-vested, number of share (in shares)	200,000	675,000	200,000	675,000	425,000	2,025,000
Non-vested, weighted average grant date fair value (in dollars per share)	$ 1.01	$ 0.91	$ 1.01	$ 0.91	$ 1.01	$ 0.76