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ACQUISITION OF BUSINESS (Narrative) (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Sep. 13, 2018 | Mar. 31, 2019 | Sep. 30, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Jul. 31, 2021
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Shares issued during period |  |  |  | 373,489 |  |  |  |  |  |
Transaction costs |  |  |  |  |  | $ (1,539) |  |  |  |
Goodwill |  | $ 59,402 |  |  |  | 62,896 | 3,777 | 3,406 | [1] |
Gain from measurement of previously held interests at acquisition date fair value | [2] |  |  |  |  | 14,677 |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Shares issued during period |  |  |  |  | 373,489 |  |  |  |  |
Road Track [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [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 |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  | $ 1,500 |  |  |  |
Goodwill |  | $ 59,402 |  |  |  |  |  |  |  |
Percentage of previous holding |  | 50.00% |  |  |  |  |  |  |  |
Gain from measurement of previously held interests at acquisition date fair value |  | $ 14,700 |  |  |  |  |  |  |  |
Road Track [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Bussiness acquisition percentage |  |  |  |  |  |  |  |  |  | 18.70%
Shares issued during period |  |  | 373,489 |  |  |  |  |  |  |
Road Track [Member] | Subsequent Event [Member] | Total shares to be issued [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |
Shares issued during period |  |  | 300,472 |  |  |  |  |  |  |
[1] | The accumulated amount of goodwill impairment loss as of December 31, 2018, 2017 and 2016 was US$ 7,098,000.
[2] | As a result of the acquisition described in Notes 1A, 3 the company gained control over certain companies (see Note 4.2) that previously were accounted under the equity method (JV's)and started to consolidate their financial statements. The company recorded one time gain in the amount of approximately $14.7 million from measurement of the JV's at the acquisition date to fair value.

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