Investments (Tables)

12 Months Ended

Dec. 31, 2018

Investments [Abstract]

Schedule of investments

Investments consisted of the following:

	As of December 31,
(in thousands)	2018		2017
Investments held at cost	$	4,114	$	4,603
Equity method investments	3,048		3,096
Total investments	$	7,162	$	7,699