Segment Information (Tables)

12 Months Ended

Dec. 31, 2018

Segment Reporting [Abstract]

Schedule of Long-Lived Assets by Location

The following table presents total long-lived assets by geographic location:

	DECEMBER 31,
(in thousands)	2018		2017
United States	$	10,393	$	6,609
Ireland	50,132		25,323
Total long-lived assets	$	60,525	$	31,932