Share-Based Payment Transactions (Details Textual) $ / shares in Units, $ in Thousands |
1 Months Ended | 6 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
May 31, 2017
$ / shares
shares
|
Mar. 31, 2017
Number / Employees
$ / shares
shares
|
May 31, 2016
shares
|
May 26, 2016
USD ($)
$ / shares
shares
|
Feb. 29, 2016
Number / Employees
Number / SeniorOfficer
$ / shares
shares
|
Jun. 30, 2019
USD ($)
|
Jun. 30, 2018
USD ($)
|
Dec. 31, 2018
USD ($)
|
Dec. 31, 2017
$ / shares
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2016
USD ($)
|
Dec. 31, 2016
USD ($)
$ / shares
|
|
| Share-Based Payment Transactions (Textual) | ||||||||||||
| Granted amount of options exercisable to ordinary shares | 60,000 | 210,000 | 74,000 | 20,000 | 160,000 | |||||||
| Exercise price of per shares | $ / shares | $ 0.90 | $ 3.662 | $ 1.43 | $ 1.15 | $ 0.07 | $ 8.32 | ||||||
| Grant period | 48 months | 48 months | 4 years | 4 years | ||||||||
| Number of employees | Number / Employees | 3 | 3 | ||||||||||
| Number of senior officer | Number / SeniorOfficer | 1 | |||||||||||
| Issuance of ordinary shares | 37,000 | 20,000 | ||||||||||
| Issuance of addition ordinary shares | 37,000 | |||||||||||
| Share based payment expenses | $ | $ 151 | $ 424 | $ 535 | $ 192 | $ 309 | $ 322 | ||||||
| weighted average remaining contractual life | 8 years 4 months 17 days | 8 years 10 months 10 days | ||||||||||
| NIS [Member] | ||||||||||||
| Share-Based Payment Transactions (Textual) | ||||||||||||
| Exercise price of per shares | $ / shares | $ 3.393 | $ 5.376 | $ 4.317 | |||||||||
| Directors [Member] | ||||||||||||
| Share-Based Payment Transactions (Textual) | ||||||||||||
| Granted amount of options exercisable to ordinary shares | 74,000 | |||||||||||
| Issuance of ordinary shares | 37,000 | |||||||||||
| Issuance of addition ordinary shares | 37,000 | |||||||||||
| Share based payment expenses | $ | $ 74 | |||||||||||