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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, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Jul. 31, 2021
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Transaction costs |  |  |  |  |  |  |  | $ (1,539) |  |  |
Goodwill |  | $ 59,402 |  |  |  | 50,086 | [1] | 62,896 | [1] | 3,777 |
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 | [3] | $ 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%
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, 2019, and 2018 was US$ 19.4 million and US$ 7.1million, respectively.
[2] | 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.
[3] | As part of the purchase price allocation for the acquisition, the Company recorded goodwill in the amount of $59.4 million. Goodwill reflects the value or premium of the acquisition price in excess of the fair values assigned to specific tangible and intangible assets. Goodwill has an indefinite useful life and therefore is not amortized as an expense (the goodwill balance is not deductible for income tax purposes), but is reviewed annually (or more, in certain circumstances) for impairment of its fair value to the Company. The purchase price intrinsically recognizes the benefits of the broadened depth of new markets and management team and is primarily attributable to expected synergies.

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