Note 16 - The Financing and Warrant Liabilities - Warrant Activity (Details) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Balance (in shares)	1,000,343	431,975
Balance, weighted average remaining contractual life (Year)	1 year 4 months 9 days	2 years 4 months 9 days	2 years 9 months 10 days
Weighted average exercise price (in dollars per share)	$ 15.11	$ 9.99
Exercisable (in shares)	1,000,343	25,800
Exercisable, weighted average remaining contractual life (Year)	1 year 4 months 9 days	2 years 4 months 9 days	18 days
Exercisable, weighted average exercise price (in dollars per share)	$ 15.11	$ 7.4635
Issued/Vested (in shares)	0	594,168
Issued/Vested, weighted average remaining contractual life (Year)		2 years 7 months 17 days
Issued/Vested, weighted average exercise price (in dollars per share)		$ 18.50
Issued/Vested, Exercisable (in shares)	0	1,000,343
Issued/Vested, exercisable, weighted average remaining contractual life (Year)		2 years 4 months 9 days
Issued/Vested, exercisable, weighted average exercise price (in dollars per share)		$ 15.11
Exercised (in shares)	0	(25,800)
Exercised, weighted average exercise price (in dollars per share)		$ 7.4635
Exercised, exercisable (in shares)	0	(25,800)
Exercised, exercisable, weighted average exercise price (in dollars per share)		$ 7.4635
Balance (in shares)	1,000,343	1,000,343	431,975
Weighted average exercise price (in dollars per share)	$ 15.11	$ 15.11	$ 9.99
Exercisable (in shares)	1,000,343	1,000,343	25,800
Exercisable, weighted average exercise price (in dollars per share)	$ 15.11	$ 15.11	$ 7.4635