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ACQUISITION OF BUSINESS (Narrative) (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Sep. 13, 2018 | Apr. 30, 2019 | Mar. 31, 2019 | Sep. 30, 2018 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jul. 31, 2021 | Sep. 13, 2019
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  |  |  |  |  | $ (1,539) |  |
Goodwill |  |  |  |  |  | 39,862 | [1] | 50,086 | [1] | 62,896 |  | $ 59,402
Intangible assets fair value |  |  |  |  |  | 38,600 |  |  |  |  |  |
Gain from measurement of previously held interests at acquisition date fair value | [2] |  |  |  |  |  |  |  |  | 14,677 |  |
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 |  |  |  |  |  |  |  |  |  |
Shares issued during period |  |  |  | 373,489 | 373,489 |  |  |  |  |  |  |
Shares return due to downward transaction price |  |  | 300,472 |  | 300,472 |  |  |  |  |  |  |
Equity return due to downward price adjustment |  |  | $ 10,800 |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  |  |  |  |  | $ 1,500 |  |
Goodwill |  | 59,400 |  |  |  |  |  |  |  |  |  |
Intangible assets fair value |  | $ 38,600 |  |  |  |  |  |  |  |  |  |
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% |
Road Track [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, 2020, and 2019 was US$ 29.89 million and US$ 19.39 million, respectively.
[2] | during 2018, as a result of the acquisition described in Note 3 the company gained control over certain companies that previously were accounted under the equity method (“JV's”) and began to include these JV's in the consolidated. 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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