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SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) item shares | Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 USD ($) shares | Dec. 31, 2013 USD ($)
Significant Accounting Policies [Line Items] |  |  |  |
Income tax benefit realization threshold | 50.00% |  |  |
Impairment of long-lived assets |  |  | $ 2,367 |
Number of reporting units | item | 1 |  |  |
Warranty expense (income) | $ 252 | 139 | 133 |
Warranty provision | 2,460 | 2,712 |  |
Trade receivables sold | 14,306 | 14,443 |  |
Accrued severance pay | 6,825 | 6,914 |  |
Severance expense | $ 1,662 | $ 2,130 | $ 1,964 | $ 2,588
Outstanding options excluded from the calculations of diluted net earnings per share due to their anti-dilutive effect | shares | 3,848,290 | 5,679,468 | 6,895,891 |
Technology and Customer Relations Intangible Assets [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Intangible assets useful lives | 7 years |  |  |
Maximum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Warranty period | 3 years |  |  |
Minimum [Member] |  |  |  |
Significant Accounting Policies [Line Items] |  |  |  |
Warranty period | 1 year |  |  |

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- Definition Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Antidilution -URI http://asc.fasb.org/extlink&oid=6505113 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Diluted Earnings Per Share -URI http://asc.fasb.org/extlink&oid=6510752 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Contingent Stock Agreement -URI http://asc.fasb.org/extlink&oid=6508534 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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