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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Narrative) (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 13, 2018 | Jun. 30, 2020 | Mar. 31, 2019 | Sep. 30, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Sep. 13, 2019
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Trading gains |  |  |  |  | $ 4,375 |  | $ (241) |  | $ 166 |  |
Allowance for doubtful accounts receivable |  |  |  |  | 4,111 |  | 3,016 |  |  |  |
Intangible asset impairment loss |  |  |  |  | 3,661 | [1] | 13,862 | [2] |  |  |
Financing income, net |  |  |  |  | 4,400 |  |  |  |  |  |
Goodwill |  |  |  |  | 39,862 | [3] | 50,086 | [3] | 62,896 |  | $ 59,402
Goodwill, fair value |  |  |  |  | 35,800 |  |  |  |  |  |
Severance expenses |  |  |  |  | 1,610 |  | 1,557 |  | 1,461 |  |
Advertising expenses |  |  |  |  | 8,100 |  | 9,500 |  | 8,100 |  |
Intangible assets fair value |  |  |  |  | 38,600 |  |  |  |  |  |
Cumulative adjustment to retained earnings |  |  |  |  |  |  |  |  |  | $ 3,000 |
Rent expenses |  |  |  |  |  |  |  |  | 3,100 |  |
Goodwill impairment |  |  |  |  | 10,508 | [4] | 12,292 | [5] |  |  |
Telematics Services [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 34,152 | [3] | 43,383 | [3] | $ 55,069 |  |
Goodwill impairment |  |  |  |  | 9,479 | [4] | 11,088 | [5] |  |  |
Telematics Products [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 3,500 |  |  |  |  |  |
Road Track [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Bussiness acquisition percentage | 81.30% |  |  |  |  |  |  |  |  |  |
Amount paid to shareholders | $ 91,700 |  |  |  |  |  |  |  |  |  |
Purchase price | 113,000 |  |  |  |  |  |  |  |  |  |
Payment in cash | 75,700 |  |  |  |  |  |  |  |  |  |
Additional amount paid | 12,000 |  |  |  |  |  |  |  |  |  |
Remaining amount paid as bonus | 4,000 |  |  |  |  |  |  |  |  |  |
Shares issued during period |  |  | 373,489 | 373,489 |  |  |  |  |  |  |
Goodwill | 59,400 |  |  |  |  |  |  |  |  |  |
Intangible assets fair value | $ 38,600 |  |  |  |  |  |  |  |  |  |
Two different reporting [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 4,100 |  |  |  |  |  |
Two different reporting [Member] | Telematics Services [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ 41,800 |  |  |  |  |  |  |  |  |
Goodwill impairment |  | 9,500 |  |  |  |  |  |  |  |  |
Two different reporting [Member] | Telematics Products [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | 4,500 |  |  |  |  |  |  |  |  |
Goodwill impairment |  | $ 1,000 |  |  |  |  |  |  |  |  |
One reporting unit [Member] | Telematics Services [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | 1,900 |  | 1,900 |  |  |  |
One reporting unit [Member] | Telematics Products [Member] |  |  |  |  |  |  |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  | $ 2,200 |  | $ 2,200 |  |  |  |
[1] | Due to the decline in the results of Road Track (See Note 3) and the current expectation of management for further potential decrease in Road Track anticipated performance, the company performed on June 30, 2020, an impairment analysis of the intangible assets which relate directly to the operation of Road Track. Based on such analysis the company recorded an impairment charge further described below:
[2] | Due to the decline in the results of Road Track (See Note 3) and the current expectation of management for further potential decrease in Road Track anticipated performance, the company performed on December 31, 2019, an impairment analysis of the intangible assets which relate directly to the operation of Road Track. Based on such analysis the company recorded an impairment charge further described below:
[3] | The accumulated amount of goodwill impairment loss as of December 31, 2020, and 2019 was US$ 29.89 million and US$ 19.39 million, respectively.
[4] | As a result of the circumstances described in note 9(**) the company recorded on June 30, 2020, a goodwill impairment in the total amount of US$ 10.5 million in connection with two reporting unit (both units related to Road track operations, see Note 3). One reporting unit within the Telematics services and the other reporting unit within the Telematics product's segments. The impairment was based on valuation performed by the management using the assistance of a third-party appraiser in accordance with the income approach. The significant assumptions used for the assessment were 3.5 years of projected net cash flows, a discount rate of 17.5% and a long-term growth rate of 0.5%. As of December 31, 2020, management preformed additional quantitative analysis and determined that no further impairment is required to be recognized.
[5] | As a result of the circumstances described in note 9(*) the company recorded on December 31, 2019, a goodwill impairment in the total amount of US$ 12.3 million in connection with two reporting units (both units related to Road track operations, see Note 3). One reporting unit within the Telematics services and the other reporting unit within the Telematics product's segments. The impairment was based on valuation performed by the management using the assistance of a third party appraiser in accordance with the income approach. The significant assumptions used for the assessment were discount rate of 14.9% and a long-term growth rate of 0.5%.

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