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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, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Unvested (in shares) |  | 435 | 515 |
Outstanding, aggregate intrinsic value | [1] | $ 2,529 | $ 12,784 | $ 16,854
Unvested, grant date weighted average cost (in dollars per share) |  | $ 6.02 | $ 5.08 |
Outstanding, weighted average remaining contractual life (Year) |  | 4 years 8 months 12 days | 5 years 1 month 6 days | 5 years 1 month 6 days
Awarded (in shares) |  | 29 | 34 |
Granted, aggregate intrinsic value | [1] | $ 0 | $ 0 |
Fair value at grant date (in dollars per share) |  | $ 16.81 | $ 12.07 |
Exercised (in shares) |  | 0 | (114) |
Exercised, aggregate intrinsic value | [1] | $ 0 | $ 5,258 |
Exercised weighted average fair value (in dollars per share) |  | $ 0 | $ 3.63 |
Forfeited (in shares) |  | 0 | 0 |
Unvested (in shares) |  | 464 | 435 | 515
Unvested, grant date weighted average cost (in dollars per share) |  | $ 6.69 | $ 6.02 | $ 5.08
Vested and exercisable (in shares) |  | 349 |  |
Vested and exercisable, aggregate intrinsic value | [1] | $ 3,743 |  |
Vested and exercisable, weighted average fair value (in dollars per share) |  | $ 5.36 |  |
Vested and exercisable, weighted average remaining contractual life (Year) |  | 3 years 9 months 18 days |  |
Unvested (in shares) |  | 115 |  |
Unvested, aggregate intrinsic value | [1] | $ (1,214) |  |
Unvested, weighted average fair value (in dollars per share) |  | $ 10.72 |  |
Unvested, weighted average remaining contractual life (Year) |  | 3 years 6 months |  |
Vested in the current year (in shares) |  | 42 |  |
Vested in the current year, aggregate intrinsic value | [1] | $ (100) |  |
Vested in the current year (in dollars per share) |  | $ 7.62 |  |
Minimum [Member] |  |  |  |
Outstanding, exercise price (in dollars per share) |  | 19.37 | 15.24 |
Granted, exercise price (in dollars per share) |  | 60.76 | 47.17 |
Exercised, exercise price (in dollars per share) |  |  | 15.24 |
Outstanding, exercise price (in dollars per share) |  | 19.37 | 19.37 | 15.24
Vested and exercisable, exercise price (in dollars per share) |  | 19.37 |  |
Unvested, exercise price (in dollars per share) |  | 35.9 |  |
Vested in the current year, exercise price (in dollars per share) |  | 35.9 |  |
Maximum [Member] |  |  |  |
Outstanding, exercise price (in dollars per share) |  | 74.92 | 50.71 |
Granted, exercise price (in dollars per share) |  | 60.76 | 74.92 |
Exercised, exercise price (in dollars per share) |  |  | 40 |
Outstanding, exercise price (in dollars per share) |  | 74.92 | 74.92 | 50.71
Vested and exercisable, exercise price (in dollars per share) |  | 54.91 |  |
Unvested, exercise price (in dollars per share) |  | 74.92 |  |
Vested in the current year, exercise price (in dollars per share) |  | 54.91 |  |
Weighted Average [Member] |  |  |  |
Outstanding, exercise price (in dollars per share) |  | 35.6 | 31.16 |
Granted, exercise price (in dollars per share) |  | 60.76 | 55.45 |
Exercised, exercise price (in dollars per share) |  | 0 | 21.55 |
Outstanding, exercise price (in dollars per share) |  | 37.17 | $ 35.6 | $ 31.16
Vested and exercisable, exercise price (in dollars per share) |  | 32.99 |  |
Unvested, exercise price (in dollars per share) |  | 49.83 |  |
Vested in the current year, exercise price (in dollars per share) |  | $ 41.69 |  |
[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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