Note 10 - Stockholders' Equity and Stock-based Compensation - Changes to Non-vested Restricted Stock Units (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Non-vested shares, balance (in shares)	3,018,788	0
Non-vested shares, fair value price per share (in dollars per share)	$ 4.58	$ 0
Number Issued (in shares)	6,090,765	4,386,107
Grant date Value per Right (in dollars per share)	$ 1.32	$ 4.64
Vested (in shares)	(2,760,687)	(1,367,319)
Vested, fair value price per share (in dollars per share)	$ 1.67	$ 4.76
Forfeited (in shares)	(2,185,104)
Forfeited, fair value price per share (in dollars per share)	$ 5.26
Non-vested shares, balance (in shares)	4,163,762	3,018,788
Non-vested shares, fair value price per share (in dollars per share)	$ 1.38	$ 4.58