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Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2017
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On October 4, 2017, the Company entered into an Asset Purchase Agreement (the “Agreement”) with Envisia Therapeutics Inc. (“Envisia”) to acquire the rights to use PRINT^® technology in ophthalmology, as well as rights relating to ENV1105, Envisia’s preclinical dexamethasone steroid product candidate for the treatment of diabetic macular edema, which also utilizes the PRINT^® technology. Under the terms of the Agreement, the Company (a) made an upfront cash payment of $10.5 million and issued 263,146 shares of Aerie’s common stock valued at approximately $14.3 million and (b) agreed to make contingent milestone payments, subject to achievement of certain product regulatory approvals. Under the provisions of ASU 2017-01, the Company expects to account for the transaction as an asset acquisition and expects that substantially all of the purchase price will be allocated to acquired in-process research and development and expensed as research and development in the consolidated statement of operations and comprehensive loss during the three months ended December 31, 2017.