Exercise Price Range [Axis] Exercise Price One [Member] Exercise Price Two [Member] Exercise Price Three [Member] Exercise Price Four [Member] Exercise Price Five [Member] Legal Entity [Axis] CardioSert Ltd [Member] Range [Axis] Minimum [Member] Income Statement Location [Axis] Research and Development Expense [Member] Equity Components [Axis] Before Reverse Split [Member] Exercise Price Six [Member] Type of Arrangement and Non-arrangement Transactions [Axis] Contract Research Agreements [Member] Award Type [Axis] Second Phase [Member] Securities Purchase Agreement [Member] Title of Individual [Axis] Investors [Member] Pre-Funded Warrant [Member] Exercise Price Seven [Member] Series A (2013) [Member] Series A (2015) [Member] Series B (2016) [Member] Board of Directors [Member] Common Stock [Member] Phase 2.1 [Member] Alliance Investment Management, Ltd. [Member] NIS [Member] Related Party [Axis] Technion Research and Development Foundation Limited [Member] Maximum [Member] Employees [Member] Exercise Price Eight [Member] Additional Paid-In Capital [Member] Cancellation of Treasury Shares [Member] Accumulated Deficit [Member] Joseph Mona [Member] Exercise Price Nine [Member] Underwriter [Member] Board of Directors [Member] Warrant One [Member] Warrant Two [Member] Warrant to Underwriters 1/2019 [Member] Warrant to Underwriters 1/2019 One [Member] Warrant to Underwriters 1/2019 Two [Member] Warrant to Underwriters 12/2019 [Member] Warrant to Underwriters 12/2019 One [Member] Warrant to Underwriters 12/2019 Two [Member] Balance Sheet Location [Axis] Accumulated other comprehensive Income [Member] Research and Development Arrangement, Contract to Perform for Others, Type [Axis] Israeli Innovation Authority [Member] 2013 Through March 31, 2020 [Member] Mr. Harel Gadot [Member] Scenario [Axis] Based on Achieving Certain Milestones, 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Long-term lease liabilities Total liabilities Commitments and contingencies Stockholders' equity: Common stock; $001 par value; 60,000,000 shares authorized as of March 31, 2020 and December 31, 2019 7,103,260 and 7,185,628 shares issued and outstanding as of March 31, 2020 and December 31, 2019 Additional paid-in capital Treasury shares Accumulated deficit Total stockholders' equity Total liabilities and stockholders' equity Common stock, par value Common stock, shares authorized Common stock, shares issued Common stock, shares outstanding Income Statement [Abstract] Research and development General and administrative Operating loss Financing expenses, net Net loss Basic and diluted net loss per share Basic and diluted weighted average common shares outstanding Statement of Comprehensive Income [Abstract] Net loss Other comprehensive loss: Net unrealized loss on available for sale security Comprehensive loss Statement [Table] Statement [Line Items] Class of Stock [Axis] Balance Balance, shares Share-based compensation Issuance of common stock and warrants net of issuance expenses Issuance of common stock and warrants net of issuance expenses, shares Unrealized loss on marketable debt security Exercise of options Exercise of options, shares Treasury Common Stock Treasury Common Stock, shares Balance Balance, shares Statement of Cash Flows [Abstract] Operating activities: Adjustments to reconcile net loss to net cash flows from operating activities: Depreciation and amortization Amortization of discount (premium) on marketable debt security Share-based compensation expense Changes in assets and liabilities: Prepaid expenses and other assets Other payables and accrued liabilities Net cash flows from operating activities Investing activities: Purchase of property and equipment Proceeds from sales of marketable security Purchase of marketable security Net cash flows from investing activities Financing activities: Issuance of common stock and warrants, net of issuance costs Net cash flows from financing activities Increase (decrease) in cash, cash equivalents and restricted cash Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at ending of period Supplemental disclosure of cash flow information: Cash received from interest Organization, Consolidation and Presentation of Financial Statements [Abstract] General Accounting Policies [Abstract] Summary of Significant Accounting Policies Leases [Abstract] Leases Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Equity [Abstract] Share Capital Recently Issued Accounting Pronouncements Schedule of Supplemental Cash Flow Information Related to Operating Leases Schedule of Maturities of Lease Liabilities Schedule of Supplemental Information Related to Leases Summary of Stock Option Activity Schedule of Stock Options Outstanding Schedule of Stock Options Valuation Assumptions Schedule of Warrants Outstanding Unrestricted cash and cash equivalent Short-term lease term Operating lease liabilities Cash payments for operating leases 2020 (Remaider of the year) 2021 2022 2023 2024 2025 Total future lease payments Less imputed interest Total lease liability balance Operating lease right of use asset Operating lease - current Operating lease - non-current Total Operating lease liability Operating leases weighted average remaining lease term (in years) Operating leases weighted average discount rate Statistical Measurement [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Total grants obtained Royalties payable as percentage of future sales Contract expected costs Settlement amount Number of post-stock split shares returned Purchase price of plaintiffs Beneficial ownership percentage Litigation settlement Initial payment Number of common shares acquired Number of common shares acquired, value Investments Buy back amount per patent Monthly consultation fee Monthly 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outstanding Shares of common stock Number of stock options outstanding, Outstanding at beginning of period Number of stock options outstanding, Granted Number of stock options outstanding, Excercise Number of stock options outstanding, Forfeited Number of stock options outstanding, Cancelled Number of stock options outstanding, Outstanding at end of period Number of stock options outstanding, Vested at end of period Weighted average exercise price, Outstanding at beginning of period Weighted average exercise price, Granted Weighted average exercise price, Exercise Weighted average exercise price, Forfeited Weighted average exercise price, Cancelled Weighted average exercise price, Outstanding at end of period Weighted average exercise price, Vested at end of period Exercise price Stock options outstanding Weighted average remaining contractual life Stock options exercisable Expected volatility, minimum Expected volatility, maximum Expected volatility Risk-free interest, minimum 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Alliance Investment Management, Ltd. [Member] Alpha Capital [Member] Before Reverse Split [Member] Board of Directors [Member] Board of Directors [Member] Bonding Agent [Member] Buy back amount per patent. CardioSert Ltd [Member] Class of warrant or righst month year from which warrants or rights exercisable. Contract expected costs. Contract Research Agreements [Member] Cumulative effect adjustment. Currency exchange rate, description. 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Research Equipment and Software [Member] Schedule of supplemental cash flow information related to operating Leases [Table Text Block] Schedule of Supplemental Information Related to Leases. Second Phase [Member] Securities Purchase Agreement [Member] Series A Convertible Preferred Shares [Member] Series A (2011) [Member] Series A (2015) [Member] Series A (2016) [Member] Series A (2013) [Member] Series A (2013) One [Member] Series A (2015) [Member] Series A (2013) [Member] Series B (2016) [Member] Series B (2016) [Member] Number of stock options outstanding, cancelled. Weighted average exercise price, cancelled. Share Incentive Plan [Member] Tax Act [Member] Technion Research And Development Foundation Limited [Member] Temporary Equity [Member] Phase 2.1 [Member] From 2018 [Member] 2017 [Member] 2016 [Member] 2013 Through December 31, 2019 [Member] 2013 Through June 30, 2019 [Member] 2013 Through September 30, 2019 [Member] US Tax Authority [Member] Underwriter [Member] Warrant One [Member] Warrant to Underwriters 1.2019 [Member] Warrant to Underwriters 1.2019 One [Member] Warrant to Underwriters 1.2019 Two [Member] Warrant to Underwriters 12.2019 [Member] Warrant to Underwriters 12.2019 One [Member] Warrant to Underwriters 12.2019 Two [Member] Warrant Two [Member] Treasury common stock value. Treasury common stock, shares Annual base salary, increasing percentage. One time special bonus, description. Mr. Harel Gadot [Member] Retroactive to January 1, 2020 [Member] Based on Achieving Certain Milestones, Commencing 2020 [Member] Provision for extinguishment dispute current. Lessee operating lease liability payments due year six. Unrestricted cash and cash equivalent. 2013 Through March 31, 2020 [Member] BoardofDirectorMember Assets, Current Assets Liabilities, Current Liabilities Treasury Stock, Value Stockholders' Equity Attributable to Parent Liabilities and Equity Operating Income (Loss) Comprehensive Income (Loss), Net of Tax, Attributable to Parent Shares, Outstanding Increase (Decrease) in Prepaid Expense and Other Assets Net Cash Provided by (Used in) Operating Activities Payments to Acquire Property, Plant, and Equipment Payments to Acquire Marketable Securities Net Cash Provided by (Used in) Investing Activities Net Cash Provided by (Used in) Financing Activities Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations Lessee, Operating Lease, Liability, to be Paid Lessee, Operating Lease, Liability, Undiscounted Excess Amount Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price