Share Based Compensation Share Based Compensation (Tables)

3 Months Ended

Mar. 31, 2018

Share-based Compensation Arrangement by Share-based Payment Award [Line Items]

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

A summary of changes in the common shares subject to nonvested PBRSUs for the three months ended March 31, 2018 follows:

	Common shares subject to PBRSUs
Nonvested at January 1, 2018	116,716
Granted	47,715
Vested	(18,800	)
Forfeited	(4,167	)
Adjustment for performance conditions of PBRSUs (1)	(2,320	)
Nonvested at March 31, 2018	139,144

Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block]

The following table details expected additional share-based compensation expense related to PBRSUs outstanding as of March 31, 2018:

(In thousands)
Nine months ending December 31, 2018	$	2,724
2019	3,098
2020	2,072
2021	846
2022	133
Total	$	8,873