Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2018
Accounting Policies [Abstract]
Liquidity	The Company believes that it will not have enough cash resources to fund the business for the next 12 months from the issuance of these financial statements. Successful completion of the Company’s research and development activities, and its transition to attaining profitable operations, is dependent upon obtaining additional financing. Additional financing may not be available on acceptable terms or at all. If the Company issues additional equity securities to raise funds, the ownership percentage of existing stockholders would be reduced. New investors may demand rights, preferences or privileges senior to those of existing holders of common stock. These factors raise substantial doubt about the Company’s ability to continue as a going concern for a period of one year from the date the condensed consolidated financial statements are issued. These condensed consolidated financial statements do not include any adjustment that might result from the outcome of this uncertainty. In June 2017, the Company announced that it had determined it was unable to secure sufficient additional financial resources to complete the phase 3 registration trial of ICT-107. As a result, the Company suspended further patient randomization in the ICT-107 trial while it continues to seek a collaborative arrangement or acquisition of its ICT-107 program. The suspension of the phase 3 registration trial of ICT-107 has reduced the amount of cash used in the Company's operations. In July 2017, the Company completed a financing that provided funds to wind down the phase 3 trial of ICT-107 and support the Stem-to-T cell program. The Company plans to improve its future liquidity by obtaining additional financing through the issuance of financial instruments such as equity and warrants or through the receipt of grants and awards. Additionally, the Company continues to evaluate its strategic alternatives, which may include a potential merger, consolidation, reorganization or other business combination, as well as the sale of the Company or the Company's assets.
Principles of Consolidation	Principles of Consolidation - The condensed consolidated balance sheets include the accounts of the Company and its subsidiaries. The condensed consolidated statements of operations include the Company’s accounts and the accounts of its subsidiaries from the date of acquisition. All intercompany transactions and balances have been eliminated in consolidation.
Cash and cash equivalents	Cash and cash equivalents – The Company considers all highly liquid instruments with an original maturity of 90 days or less at acquisition to be cash equivalents. As of March 31, 2018 and December 31, 2017, the Company had $467,144 and $466,875, respectively, of certificates of deposit. The Company places its cash and cash equivalents with various banks in order to maintain FDIC insurance on all of its investments.
Property and Equipment	Property and Equipment – Property and equipment are stated at cost and depreciated using the straight-line method based on the estimated useful lives (generally three to five years) of the related assets. Computers and computer equipment are depreciated over three years. Management continuously monitors and evaluates the realizability of recorded long-lived assets to determine whether their carrying values have been impaired. The Company records impairment losses on long-lived assets used in operations when events and circumstances indicate that the assets might be impaired and the non-discounted cash flows estimated to be generated by those assets are less than the carrying amount of those assets. Any impairment loss is measured by comparing the fair value of the asset to its carrying amount. Repairs and maintenance costs are expensed as incurred.
Research and Development Costs	Research and Development Costs – Research and development expenses consist of costs incurred for direct research and development and are expensed as incurred.
Stock Based Compensation	When issuing stock options, the Company estimates the risk-free interest rate based upon the implied yield currently available in U.S. Treasury securities at maturity with an equivalent term. The Company has not declared or paid any dividends and does not currently expect to do so in the future. The expected term of options represents the period that the Company's stock-based awards are expected to be outstanding and is determined based on projected holding periods for the remaining unexercised options. Consideration is given to the contractual terms of the stock-based awards, vesting schedules and expectations of future employee behavior. The expected volatility is based upon the historical volatility of the Company’s common stock. Forfeitures are accounted for when they occur. The Company’s stock price volatility and option lives involve management’s best estimates, both of which impact the fair value of the option calculated and, ultimately, the expense that will be recognized over the life of the option. When options are exercised, it is the Company's policy is to issue reserved but previously unissued shares of common stock to satisfy share option exercises. Stock Based Compensation – The Company records the cost for all share-based payment transactions in the Company’s condensed consolidated financial statements. Stock-based compensation expense is estimated as of the grant date based on the fair value of the award and is recognized as expense over the requisite service period, which generally equals the vesting period, based on the number of awards that are expected to vest. Estimating the fair value for stock options requires judgment, including the expected term of the Company’s stock options, volatility of the Company’s stock, expected dividends, risk-free interest rates over the expected term of the options and the expected forfeiture rate. In connection with performance-based programs, the Company makes assumptions principally related to the number of awards that are expected to vest after assessing the probability that certain performance criteria will be met. Stock option grants issued to employees and officers and directors were valued using the Black-Scholes pricing model.
Income Taxes	Income Taxes – The Company accounts for federal and state income taxes under the liability method, with a deferred tax asset or liability determined based on the difference between the financial statement and tax basis of assets and liabilities, as measured by the enacted tax rates. The Company’s provision for income taxes represents the amount of taxes currently payable, if any, plus the change in the amount of net deferred tax assets or liabilities. A valuation allowance is provided against net deferred tax assets if recoverability is uncertain on a more likely than not basis. As of March 31, 2018 and December 31, 2017, the Company fully reserved its deferred tax assets. The Company recognizes in its financial statements the impact of an uncertain tax position if the position will more likely than not be sustained upon examination by a taxing authority, based on the technical merits of the position. The Company’s policy is to recognize interest related to unrecognized tax benefits as interest expense and penalties as operating expenses. As of March 31, 2018, the Company had no unrecognized tax benefits and as such, no liability, interest or penalties were required to be recorded. The Company does not expect this to change significantly in the next twelve months. The Company has determined that its main taxing jurisdictions are the United States of America and the State of California. The Company is not currently under examination by any taxing authority nor has it been notified of a pending examination. The Company’s tax returns are generally no longer subject to examination for the years before December 31, 2014. During 2014, the Company licensed the non-U.S. rights to a significant portion of its intellectual property to its Bermuda-based subsidiary for approximately $11.0 million. The fair value of the intellectual property rights was determined by an independent third party. The proceeds from this sale represented a gain for U.S. tax purposes and were offset by current year losses and net operating loss carryforwards. However, the Internal Revenue Service, or the IRS, or the California Franchise Tax Board, or the CFTB, could challenge the valuation of the intellectual property rights and assess a greater valuation, which would require the Company to utilize a larger portion, or all, of its available net operating losses. If an IRS or a CFTB valuation exceeds the available net operating losses, the Company would incur additional income taxes. The Company’s ability to use its net operating losses is subject to the limitations of IRS Section 382, as well as expiration of federal and state net operating loss carryforwards.
Fair Value of Financial Instruments	Fair Value of Financial Instruments – The carrying amounts reported in the balance sheets for cash, cash equivalents, and accounts payable approximate their fair values due to their quick turnover. Previously, the Company estimated the fair value of warrant derivative liability using the Binomial Lattice option valuation model for warrants that are not publicly traded. The Company determined the fair value of the warrant derivative liability of its publicly traded warrants based upon the last trading price as of the balance sheet date. Effective July 1, 2017, the Company adopted ASU No. 2017-11, which specifies that financial instruments with down round protection should be accounted for as equity rather than as derivatives. Accordingly, the Company reclassified its derivatives warrants from liabilities to equity. Fair value for financial reporting is defined as 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 on the measurement date. The Company utilizes a fair value hierarchy, which requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The three levels of inputs that may be used to measure fair value are as follows: Level 1—quoted prices in active markets for identical assets or liabilities Level 2—quoted prices for similar assets and liabilities in active markets or inputs that are observable Level 3—inputs that are unobservable (for example cash flow modeling inputs based on assumptions) Warrant liabilities represented the only financial assets or liabilities recorded at fair value by the Company. The fair value of warrant liabilities was based on Level 1 or Level 3 inputs.
Use of Estimates	Use of Estimates – The preparation of condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States requires management to make certain estimates and assumptions about the future outcome of current transactions, which may affect the reporting and disclosure of these transactions. Accordingly, actual results could differ from those estimates used in the preparation of these condensed consolidated financial statements.
Warrant Liability	Warrant Liability - The fair value of the Company's derivative warrants that are not traded on the NYSE American was previously estimated using the Binomial Lattice option valuation model. The use of the Binomial Lattice option valuation model requires estimates including the volatility of the Company’s stock, risk-free rates over the expected term of warrants and early exercise of the warrants. The Company determined the warrant derivative liability of its publicly traded warrants based upon the last trading price as of the balance sheet date.
Basic and Diluted Loss per Common Share	Basic and Diluted Loss per Common Share – Basic and diluted loss per common share are computed based on the weighted average number of common shares outstanding. Common share equivalents (which consist of options and warrants) are excluded from the computation, since the effect would be antidilutive.
Recently Issued Accounting Standards	Recently Issued Accounting Standards – In February 2016, the FASB issued ASU No. 2016-02, which requires lessees to recognize in the balance sheets, a liability to make lease payments (the lease liability) and a right-of-use asset representing its right to use the underlying asset for the lease term (the lease asset). For leases with a term of 12 months or less, a lessee is permitted to make an accounting policy election by class of underlying asset not to recognize lease assets and lease liabilities. In transition, lessees and lessors are required to recognize and measure leases at the beginning of the earliest period presented using a modified retrospective approach. This ASU is effective for fiscal years beginning after December 15, 2018. The adoption of this ASU is not expected to have a material impact on the Company’s consolidated results of operations, financial condition or liquidity. In May 2017, the FASB issued ASU No. 2017-09, which provides guidance about which changes to the terms or conditions of a share-based payment award require an entity to apply modification accounting in Topic 718. An entity is required to apply modification accounting unless, 1) The fair value of the modified award is the same as the fair value of the original award immediately before the original award is modified, 2) The vesting conditions of the modified award are the same as the vesting conditions of the original award immediately before the original award is modified, and 3) The classification of the modified award as an equity instrument or a liability instrument is the same as the classification of the original award immediately before the original award is modified. This ASU is effective for annual periods beginning after December 15, 2017. The adoption of this ASU did not have a material impact on the Company’s consolidated results of operations, finance condition or liquidity. In July 2017, the FASB issued ASU No. 2017-11, which changes the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. When determining whether certain financial instruments should be classified as liabilities or equity instruments, a down round feature no longer precludes equity classification when assessing whether the instrument is indexed to an entity’s own stock. ASU No. 2017-11 also clarifies existing disclosure requirements for equity-classified instruments. As a result, a freestanding equity-linked financial instrument (or embedded conversion option) no longer would be accounted for as a derivative liability at fair value as a result of the existence of a down round feature. For freestanding equity classified financial instruments, ASU No. 2017-11 requires entities to recognize the effect of the down round feature when calculating earnings per share. That effect is treated as a dividend and as a reduction of income available to common shareholders in basic earnings per share. ASU No. 2017-11 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If an entity early adopts ASU No. 2017-11 in an interim period, adjustments should be reflected as of the beginning of the interim period in either of the following ways: 1. Retrospectively to outstanding financial instruments with a down round feature by means of a cumulative-effect adjustment to the statement of financial position as of the beginning of the first fiscal year and interim period(s) in which ASU No. 2017-11 is effective or 2. Retrospectively to outstanding financial instruments with a down round feature for each prior reporting. The Company has elected to adopt ASU No. 2017-11 effective July 1, 2017 retrospectively to outstanding financial instruments with a down round feature by means of a cumulative-effect adjustment to the Company’s beginning accumulated deficit as of January 1, 2017. (See Note 6). Other recent accounting pronouncements issued by the FASB (including its Emerging Issues Task Force) and the Securities and Exchange Commission did not or are not believed by management to have a material impact on the Company’s present or future consolidated financial statements. In July 2017, the FASB issued ASU No. 2017-11, which changes the classification analysis of certain equity-linked financial instruments (or embedded features) with down round features. When determining whether certain financial instruments should be classified as liabilities or equity instruments, a down round feature no longer precludes equity classification when assessing whether the instrument is indexed to an entity’s own stock. ASU No. 2017-11 also clarifies existing disclosure requirements for equity-classified instruments. As a result, a freestanding equity-linked financial instrument (or embedded conversion option) no longer would be accounted for as a derivative liability at fair value as a result of the existence of a down round feature. For freestanding equity classified financial instruments, ASU No. 2017-11 requires entities to recognize the effect of the down round feature when calculating earnings per share. That effect is treated as a dividend and as a reduction of income available to common shareholders in basic earnings per share. ASU No. 2017-11 is effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2018. Early adoption is permitted, including adoption in an interim period. If an entity early adopts ASU No. 2017-11 in an interim period, adjustments should be reflected as of the beginning of the interim period in either of the following ways: 1. Retrospectively to outstanding financial instruments with a down round feature by means of a cumulative-effect adjustment to the statement of financial position as of the beginning of the first fiscal year and interim period(s) in which ASU No. 2017-11 is effective or 2. Retrospectively to outstanding financial instruments with a down round feature for each prior reporting. The Company has elected to adopt ASU No. 2017-11 effective July 1, 2017 retrospectively to outstanding financial instruments with a down round feature by means of a cumulative-effect adjustment to the Company’s beginning accumulated deficit as of January 1, 2017.