Note 9 - Equity - Summary of Restricted Awards Activity (Details) - Restricted Stock - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Outstanding, shares (in shares)	2,845,525	1,628,241
Outstanding, Weighted average grant date fair value (in dollars per share)	$ 4.28	$ 6.32
Granted, shares (in shares)	1,592,659	1,867,477
Granted, Weighted average grant date fair value (in dollars per share)	$ 4.37	$ 3.05
Vested, shares (in shares)	(567,135)	(640,920)
Vested, Weighted average grant date fair value (in dollars per share)	$ 6.55	$ 5.30
Forfeited, shares (in shares)	(129,279)	(9,273)
Forfeited, Weighted average grant date fair value (in dollars per share)	$ 4.11	$ 3.49
Outstanding, shares (in shares)	3,741,770	2,845,525
Outstanding, Weighted average grant date fair value (in dollars per share)	$ 3.98	$ 4.28
Executives and Employees
Outstanding, shares (in shares)	1,400,000
Outstanding, shares (in shares)		1,400,000