Note 12 - Stock Based Compensation - Restricted Stock Award Activity (Details) - Restricted Stock [Member] - $ / shares			3 Months Ended		6 Months Ended		12 Months Ended
	Sep. 25, 2020	Aug. 27, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 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)					1 year	1 year 4 months 6 days	1 year 6 months	1 year 6 months 14 days
Granted, number of share (in shares)	162,500	162,500	12,059,291	225,000	12,059,291	225,000
Granted, weighted average grant date fair value (in dollars per share)					$ 1.31	$ 0.72
Vested, number of share (in shares)			(12,134,291)	(900,000)	(12,209,291)	(1,237,500)
Vested, weighted average grant date fair value (in dollars per share)					$ 1.30	$ 0.68
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)			275,000	1,012,500	275,000	1,012,500	425,000	2,025,000
Non-vested, weighted average grant date fair value (in dollars per share)			$ 1.01	$ 0.84	$ 1.01	$ 0.84	$ 1.01	$ 0.76