General (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |
1 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
May 22, 2019 |
May 10, 2019 |
Mar. 11, 2019 |
Apr. 29, 2019 |
Apr. 04, 2019 |
Feb. 25, 2019 |
Jan. 31, 2019 |
Jan. 18, 2019 |
Nov. 16, 2017 |
Jun. 30, 2019 |
Jun. 30, 2018 |
Sep. 30, 2019 |
Sep. 30, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| General (Textual) | ||||||||||||||||
| Ownership interest percentage | 82.00% | |||||||||||||||
| Deferred payments | $ 5,000 | |||||||||||||||
| Percentage of outstanding shares of common stock | 8.00% | |||||||||||||||
| Accrued milestone payments | $ 175 | |||||||||||||||
| Capital gain amount | $ 769 | |||||||||||||||
| Net loss | $ 4,893 | $ 2,965 | $ 7,841 | $ 3,142 | (6,571) | $ (6,433) | $ (8,393) | |||||||||
| Negative cash flows from operating activities | (5,582) | (2,126) | (4,155) | (8,972) | $ (8,714) | |||||||||||
| Accumulated deficit | (105,516) | $ (108,464) | (100,623) | (93,702) | ||||||||||||
| Ordinary shares of unlisted options exercisable grant | 400,000 | 340,000 | ||||||||||||||
| Options vest on quarterly basis for a period | 48 months | 4 years | ||||||||||||||
| Aggregate ordinary shares | 45,000,000 | 9,846,156 | 4,476,192 | |||||||||||||
| Warrants to purchase shares | 4,476,192 | |||||||||||||||
| Aggregate purchase price | $ 2,350 | |||||||||||||||
| Excluding issuance cost | $ 540 | $ 414 | 428 | $ 1,382 | $ 258 | $ 613 | $ 621 | |||||||||
| Upfront and milestone payments payable amount | $ 1,000 | |||||||||||||||
| Gross proceeds amount | $ 6,000 | $ 3,200 | $ 2,350 | |||||||||||||
| Description of american depositary share | The Company effected a change in the ratio of our ADS to ordinary shares from one (1) ADS representing two (2) ordinary shares to a new ratio of one (1) ADS representing thirty (30) ordinary shares. For ADS holders, the ratio change had the same effect as a one-for-fifteen reverse ADS split. | |||||||||||||||
| Israeli [Member] | ||||||||||||||||
| General (Textual) | ||||||||||||||||
| Exercise price | $ 2.344 | $ 2.344 | ||||||||||||||
| Chong Kun Dang Pharmaceuticals Corp [Member] | ||||||||||||||||
| General (Textual) | ||||||||||||||||
| Upfront and milestone payments payable amount | $ 6,000 | |||||||||||||||
| American Depositary Share [Member] | ||||||||||||||||
| General (Textual) | ||||||||||||||||
| Exercise price | $ 4.00 | $ 12.90 | $ 19.50 | |||||||||||||
| Aggregate ordinary shares | 1,500,000 | 328,205 | 149,206 | |||||||||||||
| Warrants to purchase shares | 149,206 | |||||||||||||||
| Exercisable terms, description | Exercisable and will expire five and one-half years from the issuance date. | Exercisable and expire five years from the issuance date. | Exercisable and expire five and one-half years from the issuance date. | |||||||||||||
| Warrant exercise price | $ 4.00 | $ 12.90 | ||||||||||||||
| American Depositary Share [Member] | Placement Agents [Member] | ||||||||||||||||
| General (Textual) | ||||||||||||||||
| Exercise price | $ 4.00 | |||||||||||||||
| Options vest on quarterly basis for a period | 5 years | |||||||||||||||
| Aggregate ordinary shares | 75,000 | 492,308 | 223,810 | |||||||||||||
| Warrants to purchase shares | 2,250,000 | 16,410 | 7,460 | |||||||||||||