Note 13 - Stock-based Compensation - Summary of Options Outstanding (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Options outstanding, shares (in shares)	588,534	445,144
Options outstanding, weighted average exercise price (in dollars per share)	$ 61.3	$ 66.62
Options granted, shares (in shares)	245,726	299,278
Options granted, weighted average exercise price (in dollars per share)	$ 94.07	$ 54.44
Options exercised, shares (in shares)	(137,874)	(103,481)
Options exercised, weighted average exercise price (in dollars per share)	$ 60.95	$ 64.72
Options cancelled, shares (in shares)		(52,407)
Options cancelled, weighted average exercise price (in dollars per share)		$ 60.58
Options outstanding, shares (in shares)	696,386	588,534
Options outstanding, weighted average exercise price (in dollars per share)	$ 72.93	$ 61.3
Options outstanding, aggregate intrinsic value	$ 15,025,015
Options exercisable, shares (in shares)	174,105
Options exercisable, weighted average exercise price (in dollars per share)	$ 68.48
Options exercisable, aggregate intrinsic value	$ 4,531,876