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GOODWILL (Schedule Of Goodwill) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016
Goodwill [Line Items] |  |  |
Goodwill, beginning balance | $ 3,406 | $ 3,356 | [1]
Translation differences | 371 | 50 |
Goodwill, ending balance | 3,777 | 3,406 |
Location Based Services [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill, beginning balance | 1,562 | 1,539 | [1]
Translation differences | 170 | 23 |
Goodwill, ending balance | 1,732 | 1,562 |
Wireless Communications Products [Member] |  |  |
Goodwill [Line Items] |  |  |
Goodwill, beginning balance | 1,844 | 1,817 | [1]
Translation differences | 201 | 27 |
Goodwill, ending balance | $ 2,045 | $ 1,844 |
[1] | The accumulated amount of goodwill impairment loss as of December 31, 2017, 2016 and 2015 was US$ 7,098,000.

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 + Details
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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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