Investments Fair Value of Equity Investments (Tables)

12 Months Ended

Dec. 31, 2018

Investments, Debt and Equity Securities [Abstract]

Fair Value, Measured on Recurring Basis, Gain (Loss) Included in Earnings [Table Text Block]

Gain on change in fair value of equity investments for the years ended December 31, 2018 and December 31, 2017 is comprised as follows:

(in thousands)	Years ended December 31,
	2018			2017
Net gains recognized on equity investments sold during the period	$	1,464		$	—
Change in unrealized losses on equity investments held at end of the period	(1,083		)	—
Gain on change in fair value of equity investments	$	381		$	—