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Share Capital (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands																	1 Months Ended			3 Months Ended		12 Months Ended
		Jan. 23, 2019	Jan. 21, 2019	Jan. 15, 2019	Jan. 14, 2019	Aug. 13, 2018	May 24, 2018	Apr. 10, 2018	Feb. 28, 2018	Dec. 28, 2017	Dec. 06, 2017	Sep. 14, 2017	Jun. 05, 2017	Jan. 05, 2017	Dec. 27, 2016	May 02, 2016	Nov. 30, 2017	May 31, 2017	Sep. 30, 2014	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Dec. 31, 2016
Authorized capital stock																				221,000,000
Common stock, shares authorized																				220,000,000		220,000,000
Ordinary shares, par value																				$ 0.01		$ 0.01
Common stock, shares issued																				4,307,666		3,012,343
Common stock, shares outstanding																				4,307,666		3,012,343
Proceeds from issuance of shares																				$ 9,562
Number of stock options granted																				11,630		10,000
Weighted-average exercise price per share, granted																				$ 8.6		$ 9
Stock-based employee compensation																				$ 315	412
Number of option exercised																						2,487
Fair market value percentage																				25.00%
Temporary equity value																				$ 500
Purchaser [Member]
Number of common stock shares sold during the period														47,163
Common stock price per share														$ 74.00
Proceeds from issuance of shares														$ 3,500
Placement agent fee														$ 210
Investor [Member]
Number of common stock shares sold during the period													252,652
Common stock price per share													$ 40.50
Proceeds from issuance of shares													$ 10,125
Placement agent fee													$ 922
Investor [Member] | Securities Purchase Agreement [Member]
Number of common stock shares sold during the period		250,000		590,000	330,000
Common stock price per share		$ 9.875		$ 10.00	$ 6.50
Proceeds from issuance and sale of stock		$ 2,470		$ 590
Board of Directors [Member]
Number of stock options granted			11,630								12,698
Weighted-average exercise price per share, granted			$ 8.60								$ 15.75
Stock option vested term			3 years								3 years
Board of Directors [Member] | General and Administrative Expense [Member]
Stock-based employee compensation																				13	15
Board of Directors [Member] | NIS [Member]
Ordinary shares, par value																$ 0.001
Harel Gadot [Member]
Number of stock options granted												120,848
Weighted-average exercise price per share, granted												$ 15.75
Harel Gadot [Member] | General and Administrative Expense [Member]
Stock-based employee compensation																				120	219
Harel Gadot [Member] | Minimum [Member]
Stock option vested term												3 years
Harel Gadot [Member] | Maximum [Member]
Stock option vested term												5 years
Hezi Himelfarb [Member]
Number of stock options granted												72,508
Weighted-average exercise price per share, granted												$ 19.35
Stock option vested term												3 years
Hezi Himelfarb [Member] | General and Administrative Expense [Member]
Stock-based employee compensation																				108	108
Employees [Member]
Ordinary shares, par value									$ 0.001
Number of stock options granted										66,036
Weighted-average exercise price per share, granted										$ 15.3
Stock option vested term										3 years
Number of option exercised									2,487
Employees [Member] | General and Administrative Expense [Member]
Stock-based employee compensation																				39	71
Employees and Consultant [Member]
Number of option exercised																	31,453
Employees and Consultant [Member] | NIS [Member]
Ordinary shares, par value																	$ 0.001
Mr. Simon Sharon [Member]
Number of stock options granted						10,000
Weighted-average exercise price per share, granted						$ 9
Stock option vested term						3 years
Mr. Simon Sharon [Member] | General and Administrative Expense [Member]
Stock-based employee compensation																				11	$ 0
Board of Directors [Member]
Stock-based employee compensation																				$ 24
CardioSert Ltd [Member]
Number of common shares acquired							6,738	6,738												6,738
CardioSert Ltd [Member] | Research and Development Expense [Member]
Stock-based employee compensation							$ 74
Microbot Israel [Member] | Board of Directors [Member]
Number of stock options granted																33,333			26,906
Number of stock option granted as adjustment of reflect merger																96,482			77,846
Weighted-average exercise price per share, granted																$ 20.25			$ 12.00
Stock option merger retroactively adjusted exercise price per share																$ 7.05			$ 4.20
Before Reverse Split [Member] | Purchaser [Member]
Number of common stock shares sold during the period														700,000
Common stock price per share														$ 5.00
Before Reverse Split [Member] | Investor [Member]
Number of common stock shares sold during the period													3,750,000
Common stock price per share													$ 2.70
Before Reverse Split [Member] | Board of Directors [Member]
Number of stock options granted											190,475
Weighted-average exercise price per share, granted											$ 1.05
Before Reverse Split [Member] | Harel Gadot [Member]
Number of stock options granted												1,812,712
Weighted-average exercise price per share, granted												$ 1.05
Before Reverse Split [Member] | Hezi Himelfarb [Member]
Number of stock options granted												1,087,627
Weighted-average exercise price per share, granted												$ 1.29
Before Reverse Split [Member] | Employees [Member]
Number of stock options granted										990,543
Weighted-average exercise price per share, granted										$ 1.02
Number of option exercised									37,300
Before Reverse Split [Member] | Employees and Consultant [Member]
Number of option exercised																	471,794
Before Reverse Split [Member] | Mr. Simon Sharon [Member]
Number of stock options granted						150,000
Weighted-average exercise price per share, granted						$ 0.6
Before Reverse Split [Member] | CardioSert Ltd [Member]
Number of common shares acquired							100,000	100,000
Before Reverse Split [Member] | Microbot Israel [Member] | Board of Directors [Member]
Number of stock options granted																500,000			403,592
Weighted-average exercise price per share, granted																$ 1.35			$ 0.80
Common Stock [Member]
Conversion of stock into shares	[1]																				103,583
Rights to acquire shares of common stock															655,962
Common Stock [Member] | Board of Directors [Member]
Number of stock options granted			11,630
Common Stock [Member] | Directors [Member]
Number of stock options granted											12,698
Common Stock [Member] | Employees [Member]
Number of stock options granted										66,036
Pre-Funded Warrant [Member] | Investor [Member] | Securities Purchase Agreement [Member]
Warrant to purchase for common stock					125,323
Warrant price per share					$ 6.49
Proceeds from issuance and sale of stock					$ 3,000
Treasury Shares [Member]
Repurchase of common stock																				$ 500
Series A Convertible Preferred Stock [Member]
Preferred stock, par value																		$ 0.01					$ 0.01
Conversion of stock into shares																		67					67
Designated preferred stock															9,736
Series A Convertible Preferred Stock [Member] | Before Reverse Split [Member]
Conversion of stock into shares																		1,000					1,000
Common Stock [Member] | Before Reverse Split [Member]
Rights to acquire shares of common stock															9,735,925
[1] December 31, 2017 share data represent the number of shares adjusted to retroactively reflect the 1:15 reverse stock split effected on September 4, 2018. Refer to Note 1 for further information.

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-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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+ References

No definition available.

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