Significant Accounting Policies | Significant Accounting Policies Basis of Presentation The Company’s interim consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). In the opinion of management, the Company has made all necessary adjustments, which include normal recurring adjustments necessary for a fair statement of the Company’s consolidated financial position and results of operations for the interim periods presented. Certain information and disclosures normally included in the annual consolidated financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. These interim consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes for the year ended December 31, 2015 included in the Company’s Annual Report on Form 10-K. The results for the three and six months ended June 30, 2016 are not necessarily indicative of the results to be expected for a full year, any other interim periods or any future year or period. Principles of Consolidation The interim consolidated financial statements include the accounts of Aerie and its wholly-owned subsidiaries. All intercompany accounts, transactions and profits have been eliminated in consolidation. Use of Estimates The preparation of consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and reported amounts of income and expenses during the reporting periods. Significant items subject to such estimates and assumptions include the valuation of stock options and operating expense accruals. Actual results could differ from these estimates. Investments The Company determines the appropriate classification of its investments in debt and equity securities at the time of purchase. The Company’s investments are comprised of certificates of deposit, commercial paper, corporate bonds and government agency securities that are classified as available-for-sale in accordance with ASC 320, Investments—Debt and Equity Securities. The Company classifies investments available to fund current operations as current assets on its consolidated balance sheets. Investments are classified as long-term assets on the consolidated balance sheets if (i) the Company has the intent and ability to hold the investments for a period of at least one year and (ii) the contractual maturity date of the investments is greater than one year. Available-for-sale investments are recorded at fair value, with unrealized gains or losses included in Comprehensive loss on the Company’s consolidated statements of operations and comprehensive loss and in Accumulated other comprehensive loss on the Company’s consolidated balance sheets. For the three and six months ended June 30, 2016 , the Company recognized unrealized gains of $58,000 and $169,000 , respectively. For the three and six months ended June 30, 2015 , the Company recognized unrealized gains of $17,000 and $66,000 , respectively. Realized gains and losses are determined using the specific identification method and are included as a component of Other income (expense), net (Note 3). There were no realized gains or losses recognized for the three and six months ended June 30, 2016 or 2015 . The Company reviews investments for other-than-temporary impairment whenever the fair value of an investment is less than the amortized cost and evidence indicates that an investment’s carrying amount is not recoverable within a reasonable period of time. To determine whether an impairment is other-than-temporary, the Company considers its intent to sell, or whether it is more likely than not that the Company will be required to sell the investment before recovery of the investment’s amortized cost basis. Evidence considered in this assessment includes reasons for the impairment, the severity and the duration of the impairment and changes in value subsequent to period end. As of June 30, 2016 , there were no investments with a fair value that was significantly lower than the amortized cost basis or any investments that had been in an unrealized loss position for a significant period. Fair Value Measurements The Company records certain financial assets and liabilities at fair value based on the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants. The fair value of the Company’s financial instruments, including cash and cash equivalents, short-term investments, other current assets, accounts payable and accrued expenses approximate their respective carrying values due to the short-term nature of these instruments. The carrying amounts of long-term investments represent their estimated fair values. The estimated fair value of the 2014 Convertible Notes was $124.2 million and $140.1 million as of June 30, 2016 and December 31, 2015 , respectively. The decrease in the estimated fair value of the 2014 Convertible Notes was primarily attributable to the change in the closing price of Aerie’s common stock on June 30, 2016 as compared to December 31, 2015 . As of June 30, 2016 and December 31, 2015 , all outstanding warrants are classified as equity and are recorded within additional paid-in capital on the consolidated balance sheets. Recent Accounting Pronouncements In January 2016, the Financial Accounting Standards Board (the “FASB”) issued ASU 2016-01, which provides guidance related to the accounting for equity investments, financial liabilities under the fair value option and the presentation and disclosure requirements for financial instruments. The guidance is effective for annual periods beginning after December 15, 2017, and all annual and interim periods thereafter, with early adoption permitted. The Company is currently evaluating the impact of this accounting standard update on the Company’s consolidated financial statements and disclosures. In February 2016, the FASB issued ASU 2016-02, which requires lessees to recognize a right of use asset and related lease liability for those leases classified as operating leases at the commencement date and have lease terms of more than 12 months. The guidance is effective for annual periods beginning after December 15, 2018, and all annual and interim periods thereafter, with early adoption permitted. The Company is currently evaluating the impact of this accounting standard update on the Company’s consolidated financial statements and disclosures. In March 2016, the FASB issued ASU 2016-09, which provides guidance related to how companies account for certain aspects of share-based payment awards to employees, including the accounting for income taxes, forfeitures, and statutory tax withholding requirements, as well as classification in the statement of cash flows. The new standard is effective for the Company for annual periods beginning after December 15, 2016 and for annual and interim periods thereafter, with early adoption permitted. The Company is currently evaluating the impact of this accounting standard update on the Company’s consolidated financial statements and disclosures. In June 2016, the FASB issued ASU 2016-13, which requires that financial assets measured at amortized cost be presented at the net amount expected to be collected. Currently, GAAP delays recognition of the full amount of credit losses until the loss is probable of occurring. Under this new standard, the income statement will reflect an entity’s current estimate of all expected credit losses. The measurement of expected credit losses will be based upon historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. Credit losses relating to available-for-sale debt securities will be recorded through an allowance for credit losses rather than as a direct write-down to the security. The new standard is effective for the Company for fiscal years beginning after December 15, 2019, including interim periods within those fiscal years. Early adoption is permitted as of the fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. The Company is currently evaluating the impact of this accounting standard update on the Company’s consolidated financial statements and disclosures. Net Loss per Share Attributable to Common Stock Basic net loss per share attributable to common stock (“Basic EPS”) is calculated by dividing the net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding for the period, without consideration for potentially dilutive securities with the exception of warrants for common stock with a $0.05 exercise price, which are exercisable for nominal consideration and are therefore included in the calculation of the weighted-average number of shares of common stock as common stock equivalents. Diluted net loss per share attributable to common stock (“Diluted EPS”) gives effect to all dilutive potential shares of common stock outstanding during this period. For Diluted EPS, net loss attributable to common stockholders used in calculating Basic EPS is adjusted for certain items related to the dilutive securities. For all periods presented, the Company’s potential common stock equivalents have been excluded from the computation of Diluted EPS as their inclusion would have the effect of reducing the net loss per share of common stock. Therefore, the denominator used to calculate Basic EPS and Diluted EPS is the same in all periods presented. The Company’s potential common stock equivalents that have been excluded from the computation of Diluted EPS for all periods presented consist of the following: THREE MONTHS ENDED SIX MONTHS ENDED 2016 2015 2016 2015 2014 Convertible Notes (1) 5,040,323 5,040,323 5,040,323 5,040,323 Outstanding stock options 5,271,279 4,601,831 5,271,279 4,601,831 Stock purchase warrants 157,500 159,506 157,500 159,506 Unvested restricted common stock awards 184,633 154,014 184,633 154,014 (1) Conversion is limited to a 9.985% ownership cap in shares of common stock by the holder. In addition to the common stock equivalents presented above, the 2014 Convertible Notes provide for an increase in the conversion rate if conversion is elected in connection with a significant corporate transaction. Refer to Note 7 for further information regarding the 2014 Convertible Notes. |