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Share Capital (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 28, 2017 | Dec. 06, 2017 | Sep. 14, 2017 | Jun. 05, 2017 | May 09, 2017 | Jan. 05, 2017 | Dec. 27, 2016 | Dec. 16, 2016 | Nov. 28, 2016 | May 02, 2016 | Nov. 30, 2017 | May 31, 2017 | Sep. 30, 2014 | Dec. 31, 2017 | Dec. 31, 2016 | Mar. 31, 2017 | Oct. 08, 2015
Preferred stock, par value |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.01 | $ 0.01 |  |  |
Authorized capital stock |  |  |  |  |  |  |  |  |  |  |  |  |  | 221,000,000 |  |  |  |
Common stock, shares authorized |  |  |  |  |  |  |  |  |  |  |  |  |  | 220,000,000 | 220,000,000 |  |  |
Common stock, par value |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.01 | $ 0.01 |  |  |
Preferred stock, shares authorized |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 | 1,000,000 |  |  |
Common stock, shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 29,880,289 | 15,848,136 |  |  |
Common stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  | 29,880,289 | 15,848,136 |  |  |
Preferred stock, shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,001 | 9,736 |  |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,001 | 9,736 |  |  |
Reverse stock splits |  |  |  |  |  |  |  |  | 36,254,240 |  |  |  |  |  |  |  |  |
Proceeds from issuance of shares |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 12,702 |  |  |  |
Number of stock options granted |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,081,357 | 1,447,223 |  |  |
Weighted-average exercise price per share, granted |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.1 |  | [1] |  |
Stock-based employee compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 254 | $ 675 |  |  |
Number of option exercised |  |  |  |  |  |  |  |  |  |  |  |  |  | (471,794) |  |  |  |
Loss on extinguishment of convertible note |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2,364 |  |  |  |
Repurchase of common stock |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500 |  |  |  |
Fair market value percentage |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |
Temporary equity value |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500 |  |  |  |
General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based employee compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | 253 | 676 |  |  |
Number of shares issued for services, value |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ (7,258) |  |  |
Microbot Israel [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value |  |  |  |  |  |  |  |  | $ 0.01 |  |  |  |  |  |  |  |  |
Loan bears interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10.00%
Microbot Israel [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based employee compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | 675 |  |  |  |
Alpha Capital [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value |  |  |  |  |  |  |  | $ 0.01 |  |  |  |  |  |  |  |  |  |
Rights to acquire shares of common stock |  |  |  |  |  |  |  | 9,736,000 |  |  |  |  |  |  |  |  |  |
Designated preferred stock |  |  |  |  |  |  |  | 9,736 |  |  |  |  |  |  |  |  |  |
Number of shares issued during period |  |  |  |  |  |  |  | 9,735,925 |  |  |  |  |  |  |  |  |  |
Common stock shares issued and outstanding reduced during the period |  |  |  |  |  |  |  | 26,518,315 |  |  |  |  |  |  |  |  |  |
Board of Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options granted | 990,543 | 190,475 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average exercise price per share, granted | $ 1.02 | $ 1.05 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option vested term | 3 years | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Board of Directors [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based employee compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 |  |  |  |
Board of Directors [Member] | Microbot Israel [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value |  |  |  |  |  |  |  |  |  | $ 0.001 |  |  |  |  |  |  |  |
Number of stock options granted |  |  |  |  |  |  |  |  |  | 500,000 |  |  | 403,592 |  |  |  |  |
Number of stock option granted as adjustment of reflect merger |  |  |  |  |  |  |  |  |  | 1,447,223 |  |  | 1,167,693 |  |  |  |  |
Weighted-average exercise price per share, granted |  |  |  |  |  |  |  |  |  | $ 1.35 |  |  | $ 0.80 |  |  |  |  |
Stock option merger retroactively adjusted exercise price per share |  |  |  |  |  |  |  |  |  | $ 0.47 |  |  | $ 0.28 |  |  |  |  |
Hazel Gadot [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options granted |  |  | 1,812,721 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average exercise price per share, granted |  |  | $ 1.05 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hazel Gadot [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based employee compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | 156 |  |  |  |
Hezi Himelfarb [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options granted |  |  | 1,087,627 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average exercise price per share, granted |  |  | $ 1.29 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option vested term |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Hezi Himelfarb [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based employee compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | 92 |  |  |  |
Employees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of stock options granted | 990,543 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employees and Directors [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based employee compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1 |  |  |  |
Employees and Consultant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, par value |  |  |  |  |  |  |  |  |  |  | $ 0.001 |  |  |  |  |  |  |
Number of option exercised |  |  |  |  |  |  |  |  |  |  | 471,794 |  |  |  |  |  |  |
Advisors [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock price per share |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1.28 |  |  |  |
Number of shares issued for services |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,802,639 |  |  |  |
Number of shares issued for services, value |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,000 |  |  |  |
Advisors [Member] | General and Administrative Expense [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based employee compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | 7,300 |  |  |  |
Consultant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock-based employee compensation |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 225 |  |  |  |
Number of shares issued for services |  |  |  |  |  |  |  |  |  |  |  |  |  | 120,000 |  |  |  |
Purchaser [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock shares sold during the period |  |  |  |  |  | 700,000 |  |  |  |  |  |  |  |  |  |  |  |
Common stock price per share |  |  |  |  |  | $ 5.00 |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of shares |  |  |  |  |  | $ 3,500 |  |  |  |  |  |  |  |  |  |  |  |
Placement agent fee |  |  |  |  |  | $ 210 |  |  |  |  |  |  |  |  |  |  |  |
Investor [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock shares sold during the period |  |  |  | 3,750,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock price per share |  |  |  | $ 2.70 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of shares |  |  |  | $ 10,125 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Placement agent fee |  |  |  | $ 922 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Minimum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  |  |  |  |  | 200,000,000 |  |  |  |  |  |  |  |  |
Minimum [Member] | Hazel Gadot [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option vested term |  |  | 3 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, shares authorized |  |  |  |  |  |  |  |  | 220,000,000 |  |  |  |  |  |  |  |  |
Maximum [Member] | Hazel Gadot [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock option vested term |  |  | 5 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Warrant [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cashless exercise warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 768 |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of stock into shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,990,000 |  |  |  |
Cashless exercise warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 359 |
Common stock, shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,583,127 |  |  |  |
Common stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  | 40,583,127 |  |  |  |
Rights to acquire shares of common stock |  |  |  |  |  |  | 9,735,925 |  |  |  |  |  |  |  |  |  |  |
Number of option exercised |  |  |  |  |  |  |  |  |  |  |  |  |  | 471,794 |  |  |  |
Number of shares issued during period |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,450,000 |  |  |  |
Series A Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Conversion of stock into shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 8,990 |  |  |  |
Preferred stock, shares issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,001 |  |  |  |
Preferred stock, shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  | 4,001 |  |  |  |
Series A Convertible Preferred Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock, par value |  |  |  |  |  |  |  |  |  |  |  | $ 0.01 |  |  | $ 0.01 |  |  |
Conversion of stock into shares |  |  |  |  |  |  |  |  |  |  |  | 1,000 |  |  | 1,000 |  |  |
Series A Convertible Preferred Stock [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Loan bears interest rate |  |  |  |  | 6.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Debt maturity date |  |  |  |  | Nov. 28, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument face amount |  |  |  |  | $ 2,029 |  |  |  |  |  |  |  |  |  |  |  |  |
Series A Convertible Preferred Stock [Member] | Alpha Capital [Member] | Securities Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares issued during period |  |  |  |  | 3,254 |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on extinguishment of convertible note |  |  |  |  | $ 2,360 |  |  |  |  |  |  |  |  |  |  |  |  |
Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cashless exercise warrants |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 359 |
Series A Preferred Shares [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Designated preferred stock |  |  |  |  |  |  | 9,736 |  |  |  |  |  |  |  |  |  |  |
[1] | Less than 1

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4304-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4313-108586 + Details
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