Supplemental Cash Flow Information (Tables)

3 Months Ended

Mar. 31, 2019

Supplemental Cash Flow Elements [Abstract]

Supplemental Cash Flow Information

	Three months ended
	March 31, 2019		March 31, 2018
Supplemental disclosures:	(in thousands)
Interest paid	$	—	$	5
Income taxes paid	$	353	$	6,232
Non-cash investing and financing activities:
Non-cash capital expenditures	$	1,068	$	733