Significant Accounting Policies [Text Block] | 2. Summary of Significant Accounting Policies The accompanying Condensed Consolidated Financial Statements include the accounts of the Company and its subsidiaries, EyeGate Pharma S.A.S. and Jade, collectively referred to as “the Company”. All inter-company balances and transactions have been eliminated in consolidation. These Condensed Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States (“U.S. GAAP”) for interim financial information. Certain information and disclosures normally included in Condensed Consolidated Financial Statements prepared in accordance with U.S. GAAP have been condensed or eliminated. Accordingly, these unaudited Condensed Consolidated Financial Statements should be read in conjunction with the annual financial statements of the Company as of and for the year ended December 31, 2016. The accompanying interim financial statements and related disclosures are unaudited, have been prepared on the same basis as the annual financial statements and, in the opinion of management, reflect all adjustments, which include normal recurring adjustments, necessary for a fair presentation of the results of operations for the periods presented. The year-end balance sheet was derived from audited financial statements, but does not include all disclosures required by U.S. GAAP. The results of operations for an interim period are not necessarily indicative of the results to be expected for the full year or for any other future year or interim period. The preparation of financial statements in conformity with U.S. GAAP requires management to make significant estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities, at the date of the financial statements, and the reported amounts of expenses during the reporting periods. The Company makes significant estimates and assumptions in recording the accruals for its clinical trial and research activities, establishing the useful lives of intangible assets and property and equipment, and conducting impairment reviews of long-lived assets. The Company bases its estimates on historical experience and various other assumptions that it believes to be reasonable under the circumstances. Although the Company monitors and regularly assesses these estimates, actual results could differ significantly from these estimates. The Company records changes in estimates in the period that it becomes aware of the change. The Company expenses research and development (“R&D”) expenditures as incurred. R&D expenses are comprised of costs incurred in performing R&D activities, including salaries, benefits, facilities, research-related overhead, sponsored research costs, contracted services, license fees, expenses related to generating, filing, and maintaining intellectual property and other external costs. Because the Company believes that, under its current process for developing its products, the viability of the products is essentially concurrent with the establishment of technological feasibility, no costs have been capitalized to date. The Company records in-process R&D projects acquired in business combinations that have not reached technological feasibility and which have no alternative future use. For in-process R&D projects acquired in business combinations, the Company capitalizes the in-process R&D project and annually evaluates this asset for impairment until the R&D process has been completed or abandoned. Once the R&D process is complete, the Company amortizes the R&D asset over its remaining useful life. At September 30, 2017, the Company had recorded $ 3,912,314 As part of the Company’s process of preparing the Condensed Consolidated Financial Statements, the Company is required to estimate its accrued expenses. This process includes reviewing open contracts and purchase orders, communicating with its applicable personnel to identify services that have been performed on its behalf and estimating the level of service performed and the associated costs incurred for the service when the Company has not yet been invoiced or otherwise notified of actual costs. The majority of the Company’s service providers invoice monthly in arrears for services performed. The Company makes estimates of its accrued expenses as of each balance sheet date in the financial statements based on facts and circumstances known at the time. The Company periodically confirms the accuracy of these estimates with the service providers and makes adjustments if necessary. The Company has entered into certain related-party transactions, making payments for services to one vendor, eight consultants and a public university, all of whom also are stockholders of the Company. These transactions generally are ones that involve a stockholder or option holder of the Company to whom we also make payments during the year, typically as a consultant or a service provider. The amounts recorded or paid are not material to the accompanying Condensed Consolidated Financial Statements. September 30, September 30, 2017 2016 (unaudited) (unaudited) Common Stock Warrants 9,519,403 2,852,736 Employee Stock Options 1,858,300 1,533,311 Preferred Stock 400,000 545,000 Total Shares of Common Stock Issuable 11,777,703 4,931,047 The carrying amounts of Accounts Receivable and Accounts Payable approximate their fair values due to the short-term nature of these financial instruments. As of September 30, 2017, and December 31, 2016, the fair value of the Company’s money market funds and contingent consideration was $ 750,946 1,210,000 1,500,882 1,210,000 At September 30, 2017 and December 31, 2016, the Company had no other assets or liabilities that are subject to fair value methodology and estimation in accordance with FASB Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurement The Company follows Accounting Standards Update (“ASU”) 2009-13, Multiple-Deliverable Revenue Arrangements, Revenue Recognition-Milestone Method When evaluating multiple element arrangements, Company management considers whether the deliverables under the arrangement represent separate units of accounting. This evaluation requires subjective determinations and requires Company management to make judgments about individual deliverables, including whether such deliverable is separable from the other aspects of the contractual relationship. In determining a unit of accounting, Company management evaluates certain criteria, including whether the deliverable has standalone value, based on the consideration of the relevant facts and circumstances for each arrangement. The consideration received is allocated among each separate unit of accounting using the relative selling price method, and the applicable revenue recognition criteria is applied to each separate unit. The Company generally expects to recognize revenue attributable to a future license obtained on a straight-line basis over the Company’s contractual or estimated performance period, which is typically the term of the Company’s R&D obligation. If Company management cannot reasonably estimate when the Company’s performance obligation ends, then revenue is deferred until Company management can reasonably estimate when the performance obligation ends. The periods over which revenue should be recognized are subject to estimates by management and may change over the course of the R&D agreement. Such a change could have a material impact on the amount of revenue the Company records in future periods. At the inception of arrangements that include milestone payments, Company management evaluates whether each milestone is substantive and at risk to both parties on the basis of the contingent nature of the milestone. This evaluation includes an assessment of whether (a) the consideration is commensurate with either (1) the entity’s performance to achieve the milestone, or (2) the enhancement of the value of the delivered item(s) as a result of a specific outcome resulting from the entity’s performance to achieve the milestone, (b) the consideration relates solely to past performance, and (c) the consideration is reasonable relative to all of the deliverables and payment terms within the arrangement. Company management evaluates factors such as the scientific, regulatory, commercial and other risks that must be overcome to achieve the respective milestone, the level of effort and investment required to achieve the respective milestone and whether the milestone consideration is reasonable relative to all deliverables and payment terms in the arrangement in making this assessment. The Company has concluded that the clinical and development milestones pursuant to its R&D arrangements are substantive. The Company aggregates its milestones into four categories: (i) clinical and development milestones, (ii) the chemistry, manufacturing and controls (“CMC”) validation, (iii) regulatory milestones, and (iv) commercial milestones. Clinical and development milestones are typically achieved when a product candidate advances into a defined phase of clinical research or completes such phase or when a contractually specified clinical trial enrollment target is attained. CMC validation milestones are typically achieved when the validation paperwork is finalized. Regulatory milestones are typically achieved upon acceptance of the submission for marketing approval of a product candidate or upon approval to market the product candidate by the FDA or other global regulatory authorities. For example, a milestone payment may be due to the Company upon the FDA’s acceptance of an NDA. Commercial milestones are typically achieved when an approved pharmaceutical product reaches certain defined levels of net sales by the licensee, such as when a product first achieves global sales or annual sales of a specified amount. Revenues from clinical and development, CMC and regulatory milestone payments (if the milestones are deemed substantive and the milestone payments are nonrefundable) are recognized upon successful accomplishment of the milestones. Revenue from commercial milestone payments are accounted for as royalties and are recorded as Revenue upon achievement of the milestone, assuming all other revenue recognition criteria are met. Payments or reimbursements resulting from the Company’s R&D activities are recognized as the services are performed and are presented on a gross basis so long as there is persuasive evidence of an arrangement, the fee is fixed or determinable, and collection of the related receivable is reasonably assured. Amounts received prior to satisfying the above revenue recognition criteria are recorded as Deferred Revenue on the Condensed Consolidated Balance Sheet. On July 9, 2015, the Company entered into an exclusive, worldwide licensing agreement with a subsidiary of Valeant Pharmaceuticals International, Inc. (“Valeant”), through which the Company granted to Valeant an exclusive, worldwide commercial and manufacturing right to the Company’s EGP-437 Product in the field of anterior uveitis, as well as a right of last negotiation to license its EGP-437 Product for indications other than anterior uveitis (the “Valeant Agreement”). There are four principal R&D milestones under the Valeant Agreement: (i) the Phase 3 Clinical Trial, (ii) the Endothelial Cell Count Safety Trial (a trial to determine that treatment has not adversely affected a patient’s corneal endothelial cell density), (iii) the CMC Validation, and (iv) the New Drug Application, or “NDA”, filing with the FDA (collectively, the “Four Milestones”, and each individually, a “Milestone”). Under the Valeant Agreement, Valeant paid to the Company an initial upfront payment, and the Company is eligible to receive certain other payments, upon and subject to the achievement of certain specified development and commercial progress of the EGP-437 Product for the treatment of anterior uveitis. The Company received the initial up-front payment in 2015, which it recorded as Deferred Revenue on its Condensed Consolidated Balance Sheet, and later in 2015 began receiving certain additional payments, based on R&D progress, to continue over several years. The Company receives payments both when it crosses certain thresholds on the way to each Milestone (each, a “Progress Payment”), as well as once it achieves each Milestone. The Company is entitled to retain all of these payments. The Company defers each Progress Payment, capitalizes each payment on its Condensed Consolidated Balance Sheet as Deferred Revenue, and recognizes these payments in the aggregate as Revenue once it achieves the Milestone to which the Progress Payment relates. The Company recognizes the initial upfront payment as Revenue ratably as it completes each of the Four Milestones, the amount recognized being the total upfront payment times the percentage represented by the proportionate share of fair value of each Milestone relative to the total fair value of all Milestones. Accordingly, the Deferred Revenue account on the Condensed Consolidated Balance Sheet is reduced as Revenue is recognized in the Condensed Consolidated Statement of Operations and Comprehensive Loss. Due to longer enrollment time, the Company expects to begin recognizing Revenue with respect to the Valeant Agreement Progress Payments in the second quarter of 2018. On February 21, 2017, the Company entered into another exclusive, worldwide licensing agreement with a subsidiary of Valeant (the “New Valeant Agreement”), through which the Company granted Valeant exclusive, worldwide commercial and manufacturing rights to its EGP-437 Product in the field of ocular iontophoretic treatment for post-operative ocular inflammation and pain in ocular surgery patients (the “New Field”). Under the New Valeant Agreement, Valeant paid the Company an initial upfront payment of $ 4.0 1.428 The Company receives government grant funds from two sources: the U.S. Department of Defense (“DoD”) and the National Science Foundation (“NSF”). The Company is paid by the DoD after it performs specified, agreed-upon research, and it records these grant funds as Revenue as it performs the research. The Company is generally paid by the NSF before it performs specified, agreed-upon research. The Company records these NSF funds on our Condensed Consolidated Balance Sheet as Deferred Revenue when invoiced, and recognize these amounts as Revenue ratably as the research is performed, typically over a six-month period. The DoD and NSF have each committed to grant funds to Jade for specified ocular therapeutic research activities (together, the “U.S. Government Grants”) to be conducted through 2017, which have been fully funded as of September 30, 2017. The Company recognizes grant funds as Revenue when it performs the activities specified by the terms of the grant and is entitled to the funds. In November 2016, FASB issued ASU No. 2016-18, Restricted Cash In February 2016, the FASB issued ASU No. 2016-02, Leases see In May 2014, the FASB issued ASU No. 2014-09, Revenue from Contracts with Customers (Topic 606) |