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Accrued Severance, Severance Assets and Retirement Plans (Tables) | 12 Months Ended
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Dec. 31, 2014
Compensation and Retirement Disclosure [Abstract] |
Breakdown of Company's Severance Liability and Severance Assets |
|  | As of December 31, |
|  | 2013 |  |  | 2014 |
Current severance liability (included in Accrued payroll, payroll taxes and social benefits) |  | $ | 151 |  |  | $ | 200 |
Non-current severance liability |  |  | 4,973 |  |  |  | 4,594 |
Total severance liability |  | $ | 5,124 |  |  | $ | 4,794 |
Amount of the total severance liability with respect to employees reaching legal retirement age in Israel in the next 10 years |  | $ | 2,071 |  |  | $ | 1,588 |
Current severance assets (included in Other current assets) |  | $ | 137 |  |  | $ | 203 |
Non-current severance assets |  |  | 3,539 |  |  |  | 3,256 |
Total severance assets |  | $ | 3,676 |  |  | $ | 3,459 |
Amount of the total severance assets with respect to employees reaching legal retirement age in Israel in the next 10 years |  | $ | 1,265 |  |  | $ | 1,156 |

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