Cover Page - shares
9 Months Ended
Sep. 30, 2019
Nov. 01, 2019
Cover page.    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Sep. 30, 2019  
Current Fiscal Year End Date --12-31  
Entity File Number 001-36152  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Entity Registrant Name Aerie Pharmaceuticals, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 20-3109565  
Entity Address, Address Line One 4301 Emperor Boulevard, Suite 400  
Entity Address, City or Town Durham  
Entity Address, State or Province NC  
Entity Address, Postal Zip Code 27703  
City Area Code 919  
Local Phone Number 237-5300  
Title of 12(b) Security Shares of common stock, par value $0.001 per share  
Trading Symbol AERI  
Security Exchange Name NASDAQ  
Entity CIK 0001337553  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Smaller Reporting Company false  
Emerging Growth Company false  
Entity Common Stock, Shares Outstanding (in shares)   46,321,454
Entity Shell Company false