Document and Entity Information [Abstract] Document and Entity Information 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 Entity Current Reporting Status Trading Symbol Entity Small Business Entity Emerging Growth Company Entity Shell Company Entity Common Stock, Shares Outstanding INTERIM CONDENSED CONSOLIDATED BALANCE SHEETS 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 Cash and cash equivalents Short-term Investments Short-term deposit (Note 4) Nontrade Receivables, Current Account receivable Prepaid Expense and Other Assets, Current Prepaid expenses and other current assets (Note 5) Assets, Current Total current assets Assets, Noncurrent [Abstract] Long-Term Assets: Prepaid Expense and Other Assets Prepaid expenses and other long-term assets (Note 5) Operating Lease, Right-of-Use Asset Operating lease right of use asset Property, Plant and Equipment, Net Property and Equipment, Net Other Assets, Noncurrent Total long-term assets Assets 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 The amount represents the other accounts payable current. Other Accounts Payable Current Other accounts payable Liabilities, Current Total current liabilities Liabilities, Noncurrent [Abstract] Long-Term Liabilities: Operating Lease, Liability, Noncurrent Operating lease liability Liabilities, Noncurrent Total long-term liabilities Liabilities Total liabilities Stockholders' Equity Attributable to Parent [Abstract] 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, 2019 and December 31, 2018; Issued and outstanding: 21,708,442 and 20,757,816 shares at June 30, 2019 and December 31, 2018, respectively. Additional Paid in Capital, Common Stock Additional paid-in-capital These lines are represents that shares receipts Receipts On Account Of Shares Receipts on account of shares Retained Earnings (Accumulated Deficit) Accumulated deficit Stockholders' Equity Attributable to Parent Balance Balance Total stockholders' equity (deficit) Liabilities and Equity Total liabilities and stockholders' equity 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 INTERIM CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS Operating Expenses [Abstract] Operating expenses: Research and Development Expense Research and development, net General and Administrative Expense General and administrative Operating Income (Loss) Operating loss Amount of financial expenses (income), net during the period. Financial Expenses Income Net Financial expenses (income), net Net Income (Loss) Attributable to Parent 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 STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Equity Components [Axis] Equity Component [Domain] Equity Component [Domain] Common Stock [Member] Common Stock [Member] Additional Paid In Capital [Member] Additional paid-in capital [Member] Receipts On Account Of Shares [Member] Receipts on account of shares [Member] Retained Earnings [Member] Accumulated Deficit [Member] Shares, Outstanding Balance (in shares) Balance (in shares) Stock Granted, 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) Stock Issued During Period, Value, Stock Options Exercised Exercise of options Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Amount of options, Exercised Exercise of options (in shares) Value of stock issued in lieu of exercise and re-issuance of warrants. Stock Issued During Period Value Exercise And Reissuance Of Warrants Exercise and reissuance of warrants Number of stock issued in lieu of exercise and re-issuance of warrants. Stock Issued During Period Share Exercise And Reissuance Of Warrants Exercise and reissuance of warrants (in shares) INTERIM CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS 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 Issuance of Stock and Warrants for Services or Claims Shares and options granted to service providers Stock or Unit Option Plan Expense Stock-based compensation related to options granted to employees and directors Operating Lease, Expense Change in lease liability The increase (decrease) during the reporting period in accounts receivable and prepaid expenses. Increase Decrease In Accounts Receivable and Prepaid Expenses Decrease (Increase) in accounts receivable and prepaid expenses Increase (Decrease) in Accounts Payable, Trade Increase in accounts payables The increase (decrease) Deferred Grant Income during the reporting period. Increase Decrease In Deferred Grant Income Increase (decrease) in deferred grant income Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Increase (decrease) in other accounts payable and accrued expenses 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 Amount of investment made in the form of lease deposit during the year. Investment In Lease Deposit Investment in lease deposit 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: Proceeds from Stock Options Exercised Proceeds from exercise of options Proceeds from Warrant Exercises Exercise and reissuance of warrants Net Cash Provided by (Used in) Financing Activities Total net cash provided by financing activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Cash and cash equivalents at end of the period Cash and cash equivalents at the beginning of the period GENERAL Business Description and Basis of Presentation [Text Block] GENERAL BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Significant Accounting Policies [Text Block] BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES RESEARCH AND LICENSE AGREEMENT The entire disclosure on research and license agreement entered by the entity. Research and License Agreement [Text Block] RESEARCH AND LICENSE AGREEMENT SHORT TERM INVESTMENTS he entire disclosure of the components short-term investments. Short-term investments may include current marketable securities. Short Term Investments [Text Block] SHORT TERM INVESTMENTS PREPAID EXPENSES The entire disclosure for Prepaid Expenses. Prepaid Expenses Disclosures [Text Block] PREPAID EXPENSES LEASES Leases of Lessee Disclosure [Text Block] LEASES DEFERRED GRANT INCOME The entire disclosure for deferred grant income. Deferred Grant Income [Text Block] DEFERRED GRANT INCOME STOCK CAPITAL Stockholders' Equity Note Disclosure [Text Block] STOCK CAPITAL SUBSEQUENT EVENTS Subsequent Events [Text Block] SUBSEQUENT EVENTS Disclosure of accounting policy unaudited interim financial statements. Unaudited Interim Financial Statements Policy [Text Block] Unaudited Interim Financial Statements Basis of Accounting, Policy [Policy Text Block] Significant Accounting Policies New Accounting Pronouncements, Policy [Policy Text Block] Recent Accounting Standards Use of Estimates, Policy [Policy Text Block] Use of estimates Tabular disclosure supplemental cash flow information related to leases, Supplemental Cash Flow Information Related To leases [Table Text Block] Schedule of supplemental cash flow information related to operating leases Lessee, Operating Lease, Liability, Maturity [Table Text Block] Schedule of future lease payments under operating leases Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] Schedule of share-based compensation expense for restricted stock Share-based Compensation, Stock Options, Activity [Table Text Block] Summary of the Company's option activity 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. Schedule Stock Awards Activity Related To Service Providers [Table Text Block] Schedule of total stock-based compensation expense Accounting Policies [Table] Adjustments for New Accounting Pronouncements [Axis] Type Of Adoption [Member] Type of Adoption [Domain] Accounting Standards Update201602 [Member] Accounting Standards Update 2016-02 [Member] Accounting Policies [Line Items] Operating Lease, Liability Total lease liability balance This element represents the percentage of all net sales royalty that the company will pay if the making, producing, manufacturing, using, marketing, selling, importing or exporting of such Licensed Product is covered by a Valid Claim or is covered by Orphan Drug Status. Percentage Of Royalty Payment If Licensed Product Covered By Valid Claim Or Orphan Drug Status Percentage Of Royalty Payment If Licensed Product Covered By Valid Claim Or Orphan Drug Status This element represents the percentage of all net sales royalty that the company will pay if the making, producing, manufacturing, using, marketing, selling, importing or exporting of such Licensed Product is not covered by a Valid Claim or is not covered by Orphan Drug Status. Percentage Of Royalty Payment If Licensed Product Not Covered By Valid Claim Or Orphan Drug Status The number of years in which the royalty o be paid . Royalty Payment, Number of Years to be Paid Range [Axis] Range [Member] Range [Domain] Minimum [Member] Minimum [Member] Maximum [Member] Maximum [Member] Cash and Cash Equivalents [Line Items] Percentage of interest-bearing bank deposits. Percentage Of Interest Bearing Bank Deposits Percentage of Interest Bearing Bank Deposits Maturity of Time Deposits Legal Entity [Axis] Entity [Domain] Entity [Domain] City Of Hope [Member] City of Hope [Member] Payments to Suppliers Prepaid Expense, Current Prepaid Expense, Noncurrent Operating Lease, Payments Cash payments for operating leases Right-of-Use Asset Obtained in Exchange for Operating Lease Liability New operating lease assets obtained in exchange for operating lease liabilities Operating Leases, Future Minimum Payments, Remainder of Fiscal Year Remainder of 2019 Operating Leases, Future Minimum Payments Due, Next Twelve Months 2020 Operating Leases, Future Minimum Payments, Due in Two Years 2021 Operating Leases, Future Minimum Payments Due Total future lease payments Lessee, Operating Lease, Liability, Undiscounted Excess Amount Less imputed interest Operating Lease, Weighted Average Remaining Lease Term Operating Lease, Weighted Average Discount Rate, Percent California Institute Of Regenerative Medicine [Member] California Institute Of Regenerative Medicine [Member] Proceeds from Grantors Grants Receivable Research and Development Arrangement, Contract to Perform for Others, Compensation Earned Award Type [Axis] Share Based Compensation Arrangements By Share Based Payment Award Award Type And Plan Name [Domain] Equity Award [Domain] Restricted Stock [Member] Restricted Stock [Member] Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number Number of Shares of Restricted Stock, Nonvested Number of Shares of Restricted Stock, Nonvested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Weighted Average Grant Date Fair Value, Nonvested Weighted Average Grant Date Fair Value, Nonvested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Vested Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Forfeitures Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding, Weighted Average Remaining Contractual Terms Weighted Average Remaining Contractual Term, Nonvested Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Employee Stock Option [Member] 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 Amount of options, Outstanding at end of period Amount of options, Outstanding at beginning of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross Amount of options, Granted Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Amount of options, Cancelled 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 end of period (in dollars per share) Weighted average exercise price, Outstanding at beginning of period (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, 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) 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) Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Table] Income Statement Location [Axis] Income Statement Location [Domain] Income Statement Location [Domain] Research And Development Expense [Member] Research and development [Member] General And Administrative Expense [Member] General and administrative [Member] Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] Share-based Compensation Total stock-based compensation expense Sale of Stock [Axis] Sale Of Stock Name Of Transaction [Domain] Sale of Stock [Domain]