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ENTITY-WIDE DISCLOSURE (Schedule of Total Revenues by Geographical Location) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total revenues - Sale of products | $ 36,053 | $ 30,431 | $ 31,339
Total revenues - Sale of Services | $ 70,474 | $ 65,363 | $ 54,268
Number of customers accounting for more than 10% of total net revenue |  |  |
Israel [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total revenues - Sale of products | $ 6,289 | $ 5,005 | $ 4,102
Total revenues - Sale of Services | 3,704 | 2,665 | 814
United states [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total revenues - Sale of products | 19,004 | 18,350 | 20,013
Total revenues - Sale of Services | 40,047 | 39,596 | 32,738
Other [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Total revenues - Sale of products | 10,760 | 7,076 | 7,224
Total revenues - Sale of Services | $ 26,723 | $ 23,102 | $ 20,716

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