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Note 19 - Stock-based Compensation - SARs Activity (Details) - Stock Appreciation Rights (SARs) [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Unvested (in shares) |  | 440 | 440 | 435
Outstanding, aggregate intrinsic value | [1] | $ 8,028 | $ 6,297 | $ 12,784
Outstanding, weighted average fair value (in dollars per share) |  | $ 6.86 | $ 6.86 | $ 6.02
Outstanding, weighted average remaining contractual life (Year) (Year) |  | 5 years 1 month 6 days | 4 years 8 months 12 days | 5 years 1 month 6 days
Granted (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) |  | (80) | (24) |
Exercised, aggregate intrinsic value | [1] | $ 3,027 | $ 681 |
Exercised weighted average fair value (in dollars per share) |  | $ 3.75 | $ 3.58 |
Forfeited (in shares) |  | 0 | 0 |
Exercised (in shares) |  | (80) | (24) |
Unvested (in shares) |  | 402 | 440 | 440
Outstanding, weighted average fair value (in dollars per share) |  | $ 8.2 | $ 6.86 | $ 6.86
Vested and exercisable (in shares) |  | 302 |  |
Vested and exercisable, aggregate intrinsic value | [1] | $ 7,011 |  |
Vested and exercisable, weighted average fair value (in dollars per share) |  | $ 6.59 |  |
Vested and exercisable, weighted average remaining contractual life (Year) |  | 4 years 1 month 6 days |  |
Unvested (in shares) |  | 100 |  |
Unvested, aggregate intrinsic value | [1] | $ 1,017 |  |
Unvested, weighted average fair value (in dollars per share) |  | $ 13.01 |  |
Unvested, weighted average remaining contractual life (Year) |  | 3 years 6 months |  |
Vested in the current year (in shares) |  | 46 |  |
Vested in the current year, aggregate intrinsic value | [1] | $ 696 |  |
Vested in the current year (in dollars per share) |  | $ 9.62 |  |
Minimum [Member] |  |  |  |
Outstanding, exercise price (in dollars per share) |  | 19.44 | 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) |  | 22.96 | 19.44 | 19.44
Vested and exercisable, exercise price (in dollars per share) |  | 22.96 |  |
Unvested, exercise price (in dollars per share) |  | 37.3 |  |
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 | 74.92
Granted, exercise price (in dollars per share) |  | 54.92 | 60.76 |
Exercised, exercise price (in dollars per share) |  | 64.71 | 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 | 38.11 | 35.6
Granted, exercise price (in dollars per share) |  | 49.2 | 60.76 |
Exercised, exercise price (in dollars per share) |  | 24.21 | 19.37 |
Outstanding, exercise price (in dollars per share) |  | 42.05 | $ 38.11 | $ 38.11
Vested and exercisable, exercise price (in dollars per share) |  | 38.75 |  |
Unvested, exercise price (in dollars per share) |  | 51.96 |  |
Vested in the current year, exercise price (in dollars per share) |  | $ 46.89 |  |
[1] | (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.

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