Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2019

Share-based Payment Arrangement [Abstract]

Share-Based Compensation Expense By Type [Table Text Block]

Share-based compensation expense was as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
PUs	$	617	$	506	$	1,507	$	3,885
RSUs	2,382		2,467		6,391		7,776
Stock options	812		802		2,395		2,456
Total	$	3,811	$	3,775	$	10,293	$	14,117