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Segment Information
 12 Months Ended
Dec. 31, 2019
Segment Reporting [Abstract]  
Segment Information Segment Information
Aerie has one operating segment: the discovery, development and commercialization of pharmaceutical products that address unmet medical needs, focusing on open-angle glaucoma, dry eye, retinal diseases and potentially other diseases of the eye. The Company's business is managed by a single management team, which reports to the Chief Executive Officer.
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