| Transactions and Balances with Related Parties (Details Textual) ₪ in Thousands | 12 Months Ended | 
|---|---|
| Dec. 31, 2017  ILS (₪) | |
| Transactions and Balances With Related Parties (Textual) | |
| Research consulting services, in consideration amount | ₪ 32 | 
| X | ||||||||||
| 
- Definition Amount of research consulting service in consideration. No definition available. 
 | 
| X | ||||||||||
| 
- References No definition available. 
 |