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Segment Information (Tables)
12 Months Ended
Dec. 31, 2019
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)
2019
 
2018
United States
$
9,184

 
$
10,393

Ireland
48,963

 
50,132

     Total long-lived assets
$
58,147

 
$
60,525