| Financial Instruments and Financial Risk Management (Details) ₪ in Thousands | 12 Months Ended | 
|---|---|
| Dec. 31, 2017  ILS (₪) | |
| Financial Instruments And Financial Risk Management [Abstract] | |
| Fair value of convertible debentures | ₪ 14,015 | 
| Unrecognized Day 1 Loss | (1,376) | 
| Debentures, net | ₪ 12,639 | 
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- Definition The net amount of debentures. No definition available. 
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- Definition Fair value of convertible debentures. No definition available. 
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| X | ||||||||||
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- Definition Financial Instruments and Financial Risk Management [Abstract]. No definition available. 
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- Definition The amount of unrecognized loss. No definition available. 
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