Share-Based Payment Transactions (Details Textual) $ / shares in Units, $ in Thousands |
1 Months Ended | 12 Months Ended | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2017
$ / shares
shares
|
May 31, 2017
$ / shares
shares
|
Mar. 31, 2017
Number / Employees
$ / shares
shares
|
May 31, 2016
shares
|
May 26, 2016
Number / Advisers
$ / shares
shares
|
Feb. 29, 2016
Number / Employees
Number / SeniorOfficer
$ / shares
shares
|
Oct. 31, 2015
Number / Employees
$ / shares
shares
|
Mar. 19, 2015
Number / Employees
Number / SeniorOfficer
$ / shares
shares
|
Dec. 31, 2017
USD ($)
|
Dec. 31, 2017
$ / shares
|
Dec. 31, 2016
USD ($)
$ / shares
|
Dec. 31, 2015
$ / shares
|
|
| Share-Based Payment Transactions (Textual) | ||||||||||||
| Granted amount of options exercisable to ordinary shares | 60,000 | 210,000 | 74,000 | 20,000 | 160,000 | 200,000 | 40,000 | |||||
| Exercise price of per shares | $ / shares | $ 3.393 | $ 3.662 | $ 5.376 | $ 4.317 | $ 3.573 | $ 8.118 | $ 2.513 | $ 20.65 | $ 20.65 | |||
| Grant period | 48 months | 48 months | 4 years | 4 years | 3 years | 4 years | ||||||
| Number of employees | Number / Employees | 3 | 3 | 1 | 3 | ||||||||
| Number of senior officer | Number / SeniorOfficer | 1 | 1 | ||||||||||
| Term of options | 10 years | |||||||||||
| Issuance of ordinary shares | 37,000 | |||||||||||
| Issuance of addition ordinary shares | 37,000 | |||||||||||
| Share based payment expenses | $ | $ 196 | $ 322 | ||||||||||
| Number of advisers | Number / Advisers | 1 | |||||||||||
| weighted average remaining contractual life | 8 years 4 months 17 days | 5 years 10 months 10 days | 4 years 8 months 2 days | |||||||||
| Top of Range [Member] | ||||||||||||
| Share-Based Payment Transactions (Textual) | ||||||||||||
| Granted amount of options exercisable to ordinary shares | 20,000 | |||||||||||
| Employees [Member] | ||||||||||||
| Share-Based Payment Transactions (Textual) | ||||||||||||
| Granted amount of options exercisable to ordinary shares | 460,000 | |||||||||||
| Exercise price of per shares | $ / shares | $ 2.513 | |||||||||||
| Grant period | 48 months | |||||||||||
| Directors [Member] | ||||||||||||
| Share-Based Payment Transactions (Textual) | ||||||||||||
| Granted amount of options exercisable to ordinary shares | 240,000 | |||||||||||
| Exercise price of per shares | $ / shares | $ 2.926 | |||||||||||
| Grant period | 48 months | |||||||||||