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Segment Information (Tables)
12 Months Ended
Dec. 31, 2020
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)20202019
United States$8,391 $9,184 
Ireland45,869 48,963 
     Total long-lived assets$54,260 $58,147