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COMMITMENTS AND CONTINGENCIES (Bank Guarantee) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Guarantor Obligations [Line Items] |  |  |
Inventory and related costs write off charge | $ 498 | $ 346 | $ 187
Costs of revenue | 8,982 | 4,326 | 8,693
Selling and marketing, net expenses | 8,528 | $ 7,834 | 7,295
Termination letter [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Inventory and related costs write off charge |  |  | 1,815
Costs of revenue |  |  | 1,639
Selling and marketing, net expenses |  |  | $ 176
Guarantee expiring April 30, 2017 [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Bank performance guarantee | 32 |  |
Guarantee expiring December 12, 2017 [Member] |  |  |
Guarantor Obligations [Line Items] |  |  |
Bank performance guarantee | $ 76 |  |

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- Definition Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=66092785&loc=d3e4542-108314 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 1C -URI http://asc.fasb.org/extlink&oid=68049868&loc=SL66093883-108312 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 330 -SubTopic 10 -Section 35 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=68049868&loc=SL66093879-108312 + Details
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