Note 11 - Share-based Compensation - Summary of Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2024	Dec. 31, 2023
Options on Common Shares, Outstanding (in shares)	4,657,635
Outstanding, weighted average exercise price (in dollars per share)	$ 2.52
Outstanding, remaining contractual term (Year)	8 years 1 month 17 days	8 years 9 months
Outstanding, aggregate intrinsic value	$ 1,195	$ 3,979
Options on Common Shares, Granted (in shares)	735,000
Granted, weighted average exercise price (in dollars per share)	$ 2.9
Options on Common Shares, Exercised (in shares)	(232,081)
Exercised, weighted average exercise price (in dollars per share)	$ 2.53
Options on Common Shares, Forfeited, cancelled, expired (in shares)	(1,359,495)
Forfeited, cancelled, expired, weighted average exercise price (in dollars per share)	$ 3.01
Options on Common Shares, Outstanding (in shares)	3,801,059	4,657,635
Outstanding, weighted average exercise price (in dollars per share)	$ 2.43	$ 2.52
Exercisable, shares (in shares)	10,199,810
Exercisable, weighted average exercise price (in dollars per share)	$ 4.09
Exercisable, weighted average contractual term (Year)	4 years 9 months 21 days
Exercisable, aggregate intrinsic value	$ 20