Share Based Compensation (Tables)

12 Months Ended

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