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v3.24.1

Changes in restricted stock awards (Details) - USD ($) $ / shares in Units, $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2023 | Jan. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Restricted Stock [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |
Restricted stock |  |  |  |  | 54,727 | 50,496 | 46,074 | 20,520
Restricted stock |  |  |  |  | $ 52.94 | $ 50.42 | $ 45.88 | $ 46.30
Restricted stock |  |  |  |  | 2 years 9 months 18 days | 3 years | 3 years 1 month 5 days | 3 years 4 months 25 days
Restricted stock |  |  |  |  | $ 2,897 | $ 2,546 | $ 2,114 | $ 950
Restricted stock, vested |  |  |  |  | (21,053) | (15,679) | (2,224) |
Restricted stock |  |  |  |  | $ 48.06 | $ 47.56 | $ 45.55 |
Restricted stock |  |  |  |  | $ (1,012) | $ (746) | $ (101) |
Restricted stock |  |  |  |  |  | (1,363) |  |
Restricted stock |  |  |  |  |  | $ 46.30 |  |
Restricted stock |  |  |  |  |  | $ (63) |  |
Time Based Awards Granted [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |
Restricted stock |  | 7,980 | 7,448 | 8,896 | 7,980 | 7,448 | 8,896 |
Restricted stock |  |  |  |  | $ 53.86 | $ 57.80 | $ 45.55 |
Restricted stock |  |  |  |  | $ 430 | $ 431 | $ 405 |
Performance Based Awards Granted [Member] |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |  |  |  |
Restricted stock | 2,272 | 15,032 | 14,016 | 18,882 | 17,304 | 14,016 | 18,882 |
Restricted stock |  |  |  |  | $ 53.92 | $ 57.80 | $ 45.55 |
Restricted stock |  |  |  |  | $ 933 | $ 810 | $ 860 |

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