Investments (Tables)

12 Months Ended

Dec. 31, 2018

Investments [Abstract]

Investments schedule [Table Text Block]

	As of December 31,
(in thousands)	2018		2017
Rabbi trust (associated with the Non-Qualified Deferred Compensation Plan)	$	6,689	$	6,734
Investments in equity securities	22		22
Total	$	6,711	$	6,756