Document And Entity Information [Abstract] Document Information [Table] Class of Stock [Axis] Class of Stock [Axis] Document Type Amendment Flag Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Entity Registrant Name Entity Central Index Key Current Fiscal Year End Date Entity Filer Category Trading Symbol Entity Common Stock, Shares Outstanding Research and License Agreement [Abstract] Research and License Agreement [Text Block] Research and License Agreement [Text Block] The entire disclosure on research and license agreement entered by the entity. Stockholders' Equity Note [Abstract] Stockholders Equity Note Disclosure [Text Block] Stockholders' Equity Note Disclosure [Text Block] Subsequent Events [Abstract] Subsequent Events [Text Block] Subsequent Events [Text Block] Schedule Of Share-Based Compensation, Stock Options, Activity [Table Text Block] Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] Research And License Agreement [Table] Income Statement Location [Axis] Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs, by Report Line [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Research And License Agreement [Line Items] Validity Of Royalty Payment Not Covered By Valid Claim Or Orphan Drug Status This element represents the validity of the royalties' payments by the company not covered by a Valid Claim or Orphan Drug Status. Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Class Of Stock [Domain] Class of Stock [Domain] Award Type [Axis] Award Type [Axis] Award Type [Domain] Award Type [Domain] Employee Stock Option [Member] Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Beginning Balance Amount of options, Outstanding at beginning of period Amount of options, Outstanding at end of period Options outstanding at end of period Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross Amount of options, Granted Number of warrants issued Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Amount of options, Exercised Exercised Exercise of options (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Amount of options, Cancelled Forfeited Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested and Expected To Vest, Outstanding, Number Amount of options, Vested and expected-to-vest at end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Weighted average exercise price, Outstanding at beginning of period (in dollars per share) Weighted average exercise price, Outstanding at end of period (in dollars per share) Exercise price (in dollars per share) Exercise price (in dollars per share) Share-Based Compensation Arrangements By Share-Based Payment Award, Options, Grants In Period, Weighted Average Exercise Price Weighted average exercise price, Granted (in dollars per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Share-Based Compensation Arrangements By Share-Based Payment Award, Options, Exercises In Period, Weighted Average Exercise Price Weighted average exercise price, Exercised (in dollars per share) Share-Based Compensation Arrangements By Share-Based Payment Award, Options, Forfeitures In Period, Weighted Average Exercise Price Weighted Average exercise Price, Cancelled (in dollars per share) Statement Of Financial Position [Abstract] Statement [Table] Statement [Table] Statement [Line Items] Statement [Line Items] Assets [Abstract] ASSETS Assets, Current [Abstract] Current Assets: Cash and Cash Equivalents, at Carrying Value, Total Cash and cash equivalents Cash and cash equivalents at the beginning of the period Cash and cash equivalents at end of the period Short-term Investments, Total Short-term deposit (Note 4) Nontrade Receivables, Current, Total Account receivable Non-trade Receivables, Current, Total Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets Assets, Current, Total Total current assets Prepaid Expense and Other Assets, Total Prepaid expenses and other long-term assets (Note 5) Assets, Total Total assets Liabilities and Equity [Abstract] LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities, Current [Abstract] Current Liabilities: Accounts Payable, Current Accounts payable Accrued Liabilities, Current Accrued expenses (Note 6) Deferred Grant Income Deferred grant income (Note 7) The carrying value for deferred grant income was received. Accounts Payable, Other, Current Other accounts payable Liabilities, Total Total liabilities Stockholders Equity Attributable To Parent [Abstract] Stockholders' Equity: Liabilities and Equity Total liabilities and stockholders' equity Common Stock, Value, Issued Stock capital: (Note 8) Common stock of $0.00005 par value - Authorized: 100,000,000 shares at each of June 30, 2018 and December 31, 2017; Issued and outstanding: 20,669,528 and 18,976,169 shares at June 30, 2018 and December 31, 2017, respectively. Additional Paid In Capital, Common Stock Additional paid-in-capital Receipts On Account Of Shares Receipts on account of shares These lines are represents that shares receipts. Retained Earnings (Accumulated Deficit) Accumulated deficit Liabilities, Noncurrent [Abstract] Long-Term Liabilities: Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Research and Development Expense [Member] Research and development [Member] General and Administrative Expense [Member] General and administrative [Member] Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] Share-based Compensation, Total Total stock-based compensation expense Subsidiary, Sale Of Stock [Axis] Subsidiary, Sale of Stock [Axis] Sale Of Stock, Name Of Transaction [Domain] Sale of Stock, Name of Transaction [Domain] Private Placement [Member] Range [Axis] Range [Axis] Range [Domain] Range [Domain] Equity Components [Axis] Statement, Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Related Party [Axis] Related Party [Axis] Related Party [Domain] Related Party [Domain] Related Party [Member] Related Party Member. Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Option Indexed To Issuer'S Equity, Type [Axis] Option Indexed to Issuer's Equity, Type [Axis] Option Indexed To Issuer'S Equity, Type [Domain] Option Indexed to Issuer's Equity, Type [Domain] Global Share Option Plan 2014 and U S Stock Option and Incentive Plan 2014 [Member] Title of Individual [Axis] Deferred Bonus and Profit Sharing Plan by Title of Individual [Axis] Title Of Individual With Relationship To Entity [Domain] Title of Individual with Relationship to Entity [Domain] Director [Member] Chief Operating Officer [Member] Chief Executive Officer [Member] Chief Financial Officer [Member] Restricted Stock [Member] Variable Interest Entities [Axis] Variable Interest Entities [Axis] Variable Interest Entity, Classification [Domain] Variable Interest Entity, Classification [Domain] Products and Services [Axis] Products and Services [Axis] Products and Services [Domain] Products and Services [Domain] Legal Advisor [Member] Consultants [Member] Subsequent Event Type [Axis] Subsequent Event Type [Axis] Subsequent Event Type [Domain] Subsequent Event Type [Domain] Geographical [Axis] Geographical [Axis] Geographical [Domain] Geographical [Domain] Investment Type [Axis] Investment Type [Axis] Investments [Domain] Investments [Domain] Agreement [Axis] Investment Warrants, Exercise Price Exercise Price (in dollars per share) Investment Warrants, Exercise Price Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting Period Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Shares Issued, Price Per Share Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights Subsequent Event [Table] Subsequent Event [Member] Stock Issue [Axis] Stock Issue [Domain] Balance Sheet Parenthetical [Abstract] Balance Sheet Parenthetical Statement, Scenario [Axis] Scenario, Unspecified [Domain] Common Stock, Par Or Stated Value Per Share Common stock, par value (in dollars per share) Common Stock, Shares Authorized Common stock, shares Authorized Common Stock, Shares, Issued Common stock, shares Issued Common Stock, Shares, Outstanding Common stock, shares outstanding Income Statement [Abstract] Operating Expenses [Abstract] Operating expenses: Research and Development Expense, Total Research and Development Expense Research and development, net Research and Development Expense General and Administrative Expense General and administrative Operating Income (Loss) Operating loss Financial Expenses Income Net Financial expenses (income), net Amount of financial expenses (income), net during the period. Net Income (Loss) Attributable to Parent, Total Net loss Net loss Net loss Income (Loss) From Continuing Operations, Per Basic and Diluted Share Basic and diluted net loss per share from continuing operations Weighted Average Number Of Shares Outstanding, Basic and Diluted Weighted average number of shares outstanding used in computing basic and diluted net loss per share Statement Of Stockholders Equity [Abstract] Common Stock [Member] Additional Paid-in Capital [Member] Receipts on account of shares [Member] Retained Earnings [Member] Accumulated Deficit [Member] Stockholders Equity Attributable To Parent Balance Balance Total stockholders' equity Shares, Outstanding Balance (in shares) Balance (in shares) Stock Granted During Period, Value, Share-Based Compensation, Net Of Forfeitures Stock-based compensation related to warrants and stock granted to service providers Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Net Of Forfeitures Stock-based compensation related to warrants and stock granted to service providers (in shares) Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures Stock-based compensation related to stock and options granted to directors and employees Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures Stock-based compensation related to stock and options granted to directors and employees (in shares) Statement Of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Cash flows from operating activities: Adjustments To Reconcile Net Income (Loss) To Cash Provided By (Used In) Operating Activities [Abstract] Adjustments to reconcile net loss to net cash used in operating activities: Depreciation Depreciation Stock Or Unit Option Plan Expense Stock-based compensation related to options granted to employees and directors Increase Decrease In Accounts Receivable and Prepaid Expenses Decrease (Increase) in accounts receivable and prepaid expenses The increase (decrease) during the reporting period in accounts receivable and prepaid expenses. Increase (Decrease) In Accounts Payable, Trade Increase (decrease) in trade payables Increase Decrease In Deferred Grant Income Increase (decrease) in deferred grant income The increase (decrease) Deferred Grant Income during the reporting period. Net Cash Provided by (Used in) Operating Activities Total net cash provided by (used in) operating activities Net Cash Provided by (Used in) Investing Activities [Abstract] Cash flows from investing activities: Payments To Acquire Property, Plant, and Equipment Purchase of property and equipment Payments for (Proceeds from) Investments Changes in short-term deposit Investment In Lease Deposit Investment in lease deposit Amount of investment made in the form of lease deposit during the year. Net Cash Provided by (Used in) Investing Activities Total net cash provided by (used in) investing activities Net Cash Provided by (Used in) Financing Activities [Abstract] Cash flows from financing activities: Cash and Cash Equivalents, Period Increase (Decrease) Increase (decrease) in cash and cash equivalents Noncash Investing and Financing Items [Abstract] Non-cash financing activities: General and Going Concern Disclosure [Abstract] Business Description and Basis of Presentation [Text Block] Business Description and Basis of Presentation [Text Block] Accounting Policies [Abstract] Basis of Presentation and Significant Accounting Policies [Text Block] Basis of Presentation and Significant Accounting Policies [Text Block] Unaudited Interim Financial Statements [Policy Text Block] Disclosure of accounting policy unaudited interim financial statements. Basis of Accounting, Policy [Policy Text Block] Schedule Stock Awards Activity Related To Service Providers [Table Text Block] Tabular disclosure includes the number and weighted-average issue prices for warrants issued to services providers that were outstanding at the beginning and end of the year, and issued during the year. New Accounting Pronouncements, Policy [Policy Text Block] Stock Issued During Period, Value, Stock Options Exercised Exercise of options Stock Issued During Period, Value, Exercise Of Warrants Exercise of warrants Value of stock issued during the period as a result of exercise of warrants Stock Issued During Period, Shares, Exercise Of Warrants Exercise of warrants (in shares) Number of shares issued during the period as a result of exercise of warrants Stock Issued During Period,Value,Exercise and Reissuance Of Warrants Exercise and reissuance of warrants Value of stock issued during the period as a result of exercise and reissuance of warrants. Stock Issued During Period,Share,Exercise and Reissuance Of Warrants Exercise and reissuance of warrants (in shares) Number of stock issued during the period as a result of exercise and reissuance of warrants. Proceeds from Warrant Exercises Exercise and reissuance of warrants Agreement [Domain] Cash and Cash Equivalents [Abstract] Short Term Investments [Text Block] The entire disclosure of the components short-term investments. Short-term investments may include current marketable securities. Legal Entity [Axis] Entity [Domain] Percentage Of Interest Bearing Bank Deposits Percentage of Interest Bearing Bank Deposits Percentage of interest-bearing bank deposits. Maturity of Time Deposits Cash and Cash Equivalents [Line Items] Minimum [Member] Maximum [Member] Use of Estimates, Policy [Policy Text Block] Assets, Noncurrent [Abstract] Long-Term Assets: Property, Plant and Equipment, Net, Total Depreciated cost Property and Equipment, Net Other Assets, Noncurrent Total long-term assets Proceeds from Stock Options Exercised Proceeds from exercise of options Proceeds from Issuance or Sale of Equity Proceeds from equity offering through issuances of equity warrants and common stock through the exercise of previously issued equity warrants Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage Net Cash Provided by (Used in) Financing Activities Total net cash provided by financing activities Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Subsequent Event [Line Items] Liabilities, Current, Total Total current liabilities Increase (Decrease) In Other Accounts Payable and Accrued Liabilities Increase (decrease) in other accounts payable and accrued expenses Deferred Grant Income [Abstract] Deferred Grant Income [Text Block] The entire disclosure for deferred grant income. Deferred Revenue Disclosure [Abstract] Deferred Revenues [Table] Deferred Grant Income [Line Items] Proceeds from Grantors Grants Receivable Plan Name [Axis] Prepaid Expenses Disclosures [Abstract] Prepaid Expenses Disclosures [Text Block] Research and Development Arrangement, Contract to Perform for Others, Compensation Earned Less : Participation by the Israeli Office of the Chief Scientist Prepaid Expense, Current Prepaid Expense, Noncurrent Class of Warrant or Right [Axis] Plan Name [Domain] Second Amended And Restated Director Compensation Plan [Member] Payments to Suppliers City Of Hope [Member] Stock Issued During Period, Shares, Restricted Stock Award, Gross Executive Vice President, Chief Business Officer and Director [Member] Class of Warrant or Right, Outstanding Outstanding Mr. Yablonka [Member] Common Stock, Capital Shares Reserved for Future Issuance Dr. Anthony Polverino [Member] Arturo Araya One [Member] Arturo Araya Two [Member] Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Weighted average exercise price, Vested and expected-to-vest at end of period (in dollars per share) Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Outstanding, Intrinsic Value Aggregate intrinsic value, Outstanding at end of period (in dollars) Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Vested and Expected To Vest, Outstanding, Aggregate Intrinsic Value Aggregate intrinsic value, Vested and expected-to-vest at end of period (in dollars) Israel Innovation Authority [Member] Document Information [Line Items] Class of Warrant or Right, Number of Securities Called by Warrants or Rights Class of Warrant or Right, Exercise Price of Warrants or Rights Warrant Expiration Date The expiration date of warrant. Class of Warrant or Right [Domain] Two thousand fifteen warrants [Member] New Warrant [Member] Cash, Cash Equivalents, and Short-term Investments Payables and Accruals [Abstract] Accounts Payable and Accrued Liabilities Disclosure [Text Block] Cash Bonus Paid These lines are represents that cash bouns payment made. Board of Directors Chairman [Member]