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SEGMENTS, CUSTOMERS AND GEOGRAPHIC INFORMATION (Schedule Of Revenues From Sales To Unaffiliated Customers) (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 USD ($) item | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Number of reportable segments | item | 1 |  |
Revenues | $ 293,641 | $ 349,435 | $ 371,112
Long-lived assets | 27,560 | 28,906 | 33,138
North America [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 40,236 | 45,934 | 40,353
Europe [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 43,457 | 48,637 | 58,537
Africa [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 19,872 | 34,642 | 55,954
Asia-Pacific and Middle East [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 29,743 | 31,929 | 42,095
India [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 80,247 | 105,990 | 92,066
Latin America [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Revenues | 80,086 | 82,303 | 82,107
Israel [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-lived assets | 23,162 | 26,127 | 29,418
Others [Member] |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |
Long-lived assets | $ 4,398 | $ 2,779 | $ 3,720

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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