Note 19 - Stock-based Compensation - SARs Activity (Details) - Stock Appreciation Rights (SARs) [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended	12 Months Ended
		Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unvested (in shares)		440	435
Outstanding, aggregate intrinsic value	[1]	$ 5,371	$ 6,297	$ 12,784
Unvested, grant date weighted average cost (in dollars per share)		$ 6.86	$ 6.02
Outstanding, weighted average remaining contractual life (Year)		4 years 10 months 24 days	4 years 8 months 12 days	5 years 1 month 6 days
Awarded (in shares)		42	29
Granted, aggregate intrinsic value	[1]	$ 0	$ 0
Fair value at grant date (in dollars per share)		$ 13.75	$ 16.81
Exercised (in shares)		(1)	(24)
Exercised, aggregate intrinsic value	[1]	$ 32	$ 681
Exercised weighted average fair value (in dollars per share)		$ 3.97	$ 3.58
Forfeited (in shares)		0	0
Unvested (in shares)		481	440	435
Unvested, grant date weighted average cost (in dollars per share)		$ 7.47	$ 6.86	$ 6.02
Vested and exercisable (in shares)		378
Vested and exercisable, aggregate intrinsic value	[1]	$ 5,212
Vested and exercisable, weighted average fair value (in dollars per share)		$ 6
Vested and exercisable, weighted average remaining contractual life (Year)		3 years 10 months 24 days
Unvested (in shares)		103
Unvested, aggregate intrinsic value	[1]	$ (279)
Unvested, weighted average fair value (in dollars per share)		$ 12.8
Unvested, weighted average remaining contractual life (Year)		3 years 10 months 24 days
Vested in the current year (in shares)		43
Vested in the current year, aggregate intrinsic value	[1]	$ 66
Vested in the current year (in dollars per share)		$ 9.87
Minimum [Member]
Outstanding, exercise price (in dollars per share)		19.44	19.37
Granted, exercise price (in dollars per share)		47.95	60.76
Exercised, exercise price (in dollars per share)		45.76	19.37
Outstanding, exercise price (in dollars per share)		19.44	19.44	19.37
Vested and exercisable, exercise price (in dollars per share)		19.44
Unvested, exercise price (in dollars per share)		36.65
Vested in the current year, exercise price (in dollars per share)		36.65
Maximum [Member]
Outstanding, exercise price (in dollars per share)		74.92	74.92
Granted, exercise price (in dollars per share)		54.92	60.76
Exercised, exercise price (in dollars per share)		45.76	19.37
Outstanding, exercise price (in dollars per share)		74.92	74.92	74.92
Vested and exercisable, exercise price (in dollars per share)		60.76
Unvested, exercise price (in dollars per share)		74.92
Vested in the current year, exercise price (in dollars per share)		60.76
Weighted Average [Member]
Outstanding, exercise price (in dollars per share)		38.11	35.6
Granted, exercise price (in dollars per share)		49.2	60.76
Exercised, exercise price (in dollars per share)		24.56	19.37
Outstanding, exercise price (in dollars per share)		39.12	$ 38.11	$ 35.6
Vested and exercisable, exercise price (in dollars per share)		35.7
Unvested, exercise price (in dollars per share)		51.61
Vested in the current year, exercise price (in dollars per share)		$ 47.37

[1] Aggregate intrinsic value for SARs is defined as the amount by which the current market price of the underlying stock exceeds the exercise or grant price.