Note 15 - Share-based Compensation - Stock Option Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) $ / shares shares
Options outstanding (in shares) | shares	341,436
Options outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 28.87
Issued (in shares) | shares	0
Issued, weighted average exercise price (in dollars per share) | $ / shares	$ 0
Exercised (in shares) | shares	(38,400)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 25.44
Forfeited or expired (in shares) | shares	(37,950)
Forfeited or expired, weighted average exercise price (in dollars per share) | $ / shares	$ 32.05
Options outstanding (in shares) | shares	265,086
Options outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 38.92
Options outstanding, weighted average remaining term (Year)	4 years 3 months 18 days
Options outstanding, intrinsic value | $	$ 909,038
Expected to vest (in shares) | shares	61,550
Expected to vest, weighted average exercise price (in dollars per share) | $ / shares	$ 32.79
Expected to vest, weighted average remaining term (Year)	7 years 1 month 6 days
Expected to vest, intrinsic value | $	$ 74,333
Exercisable (in shares) | shares	203,536
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 27.75
Exercisable, weighted average remaining term (Year)	3 years 6 months
Exercisable, intrinsic value | $	$ 834,705