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Share Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2023
Share-Based Payment Arrangement [Abstract] |
Share-based Payment Arrangement, Restricted Stock Unit, Activity | A summary of changes in the common shares subject to nonvested PBRSUs for the years ended December 31, 2023 and 2022 follows:
| Common shares subject to PBRSUs
Nonvested at January 1, 2022 | 211,819 |
Granted | 52,335 |
Vested | (55,464) |
Forfeited | (8,406) |
Adjustment for performance conditions of PBRSUs (1) | (634) |
Nonvested at January 1, 2023 | 199,650 |
Granted | 54,698 |
Vested | (62,815) |
Forfeited | (4,597) |
Adjustment for performance conditions of PBRSUs (1) | — |
Nonvested at December 31, 2023 (2) | 186,936 |
(1) The number of PBRSUs earned depends on the level of achievement with respect to certain performance criteria. Adjustment herein represents the difference between the maximum number of common shares which could be earned and the actual number earned for those PBRSUs as to which the performance period was completed. (2) Nonvested amount herein represents the maximum number of nonvested PBRSUs. As of December 31, 2023, an aggregate of 184,199 PBRSUs are expected to vest. A summary of awards that vested during the twelve months ended December 31, 2023 and 2022 follows:
|  | Twelve Months Ended December 31,
|  | 2023 |  | 2022
PBRSU and TBRSU vested |  | 62,815 |  | 55,464
Common shares withheld to satisfy employee income tax withholding obligations |  | 23,973 |  | 21,219
Net common shares issued |  | 38,842 |  |  | 34,245 |
Share-based Payment Arrangement, Nonvested Award, Cost | The following table details expected additional share-based compensation expense related to PBRSUs outstanding at December 31, 2023:
(In thousands) |  |
2024 |  | $ | 4,393 |
2025 |  | 2,885 |
2026 |  | 1,206 |
2027 |  | 194 |
Total |  | $ | 8,678 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of cost not yet recognized and weighted-average period over which cost is expected to be recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (i) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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