Note 14 - Share-based Compensation - Stock Option Activity (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($) $ / shares shares
Options outstanding (in shares) | shares	328,000
Options outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 26.94
Issued (in shares) | shares	85,500
Issued, weighted average exercise price (in dollars per share) | $ / shares	$ 39.80
Exercised (in shares) | shares	(26,050)
Exercised, weighted average exercise price (in dollars per share) | $ / shares	$ 17.69
Forfeited or expired (in shares) | shares	(46,014)
Forfeited or expired, weighted average exercise price (in dollars per share) | $ / shares	$ 41.71
Options outstanding (in shares) | shares	341,436
Options outstanding, weighted average exercise price (in dollars per share) | $ / shares	$ 28.87
Options outstanding, weighted average remaining term (Year)	5 years 1 month 6 days
Options outstanding, intrinsic value | $	$ 363,595
Expected to vest (in shares) | shares	118,736
Expected to vest, weighted average exercise price (in dollars per share) | $ / shares	$ 31.70
Expected to vest, weighted average remaining term (Year)	7 years 8 months 12 days
Expected to vest, intrinsic value | $	$ 34,364
Exercisable (in shares) | shares	222,700
Exercisable, weighted average exercise price (in dollars per share) | $ / shares	$ 27.37
Exercisable, weighted average remaining term (Year)	3 years 8 months 12 days
Exercisable, intrinsic value | $	$ 329,231