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Stock-based compensation (Tables)	9 Months Ended
Stock-based compensation (Tables)	Sep. 30, 2023
Executive Officers
Schedule of restricted and unrestricted stock units	(Not in thousands) Shares Weighted-Average Grant Date Fair Value Non-vested at December 31, 2021 321,883 $ 47.98 Granted 194,791 84.29 Performance Shares Quantity Adjustment 6,947 78.02 Vested (240,033) 66.11 Forfeited (1,625) 78.86 Non-vested at December 31, 2022 281,963 $ 56.50 Granted 251,658 66.79 Performance Shares Quantity Adjustment 16,374 76.07 Vested (232,717) 66.38 Forfeited (16,082) 55.56 Non-vested at September 30, 2023 301,196 $ 58.14
Directors
Schedule of restricted and unrestricted stock units	(Not in thousands) RSUs / Unrestricted stock Weighted-Average Grant Date Fair Value per Unit Non-vested at December 31, 2021 $ - $ - Granted 25,321 77.48 Vested (25,321) 77.48 Forfeited - - Non-vested at December 31, 2022 $ - $ - Granted 37,712 55.05 Vested (37,712) 55.05 Forfeited - - Non-vested at September 30, 2023 $ - $ -