Share Based Compensation (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]

A summary of changes in the common shares subject to nonvested PBRSUs and TBRSUs for the three months ended March 31, 2021 follows:

	Common shares subject to PBRSUs and TBRSUs
Nonvested at January 1, 2021	204,108
Granted	61,890
Vested	(35,872)
Forfeited	(843)
Adjustment for performance conditions of PBRSUs (1)	(2,535)
Nonvested at March 31, 2021 (2)	226,748

Share-based Payment Arrangement, Nonvested Award, Cost [Table Text Block]

The following table details expected additional share-based compensation expense related to PBRSUs and TBRSUs outstanding at March 31, 2021:

(In thousands)
Nine months ending December 31, 2021	$	3,741
2022	4,089
2023	2,612
2024	1,069
2025	170
Total	$	11,681