Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2020

Share-based Payment Arrangement, Noncash Expense [Abstract]

Share-based Compensation Arrangements by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding [Table Text Block]

Stock-based compensation expense consisted of the following:

	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2020		2019		2020		2019
Stock options	$	1,775	$	1,509	$	5,234	$	4,600
Restricted stock units	3,315		2,869		7,568		8,559
Total	$	5,090	$	4,378	$	12,802	$	13,159