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STOCKHOLDERS' EQUITY (Narrative) (Details) $ in Thousands | 1 Months Ended | 12 Months Ended | 13 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2021 USD ($) | Apr. 30, 2019 shares | Mar. 31, 2019 shares | Sep. 30, 2018 shares | Feb. 27, 2017 USD ($) | Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) | Dec. 31, 2017 shares | Jan. 31, 2020 USD ($) | Jan. 31, 2019 USD ($) | Jan. 31, 2018 USD ($) | Mar. 31, 2021 ₪ / shares | May 21, 2020 USD ($)
Amount authorized for repurchase of ordinary shares | $ |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 25,000
Treasury stock acquired | shares |  |  |  |  |  |  | 2,662,125 | 2,662,125 |  | 2,507,314 |  |  |  |  |
Percentage of outstanding stock in treasury stock |  |  |  |  |  |  | 11.30% |  |  | 10.70% |  |  |  |  |
Dividend paid | $ |  |  |  |  |  | $ 5,000 | $ 4,918 | $ 14,940 | $ 15,366 |  | $ 5,000 | $ 20,000 | $ 20,200 |  |
Stcok repurchased by subsidiary, shares | shares |  |  |  |  |  |  |  | 227,828 |  |  |  |  |  |  |
Stcok repurchased by subsidiary, amount | $ | [1] |  |  |  |  |  |  | $ 6,001 |  |  |  |  |  |  |
Road Track [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares Issued during period | shares |  |  |  | 373,489 | 373,489 |  |  |  |  |  |  |  |  |  |
Shares return due to downward transaction price | shares |  |  | 300,472 |  | 300,472 |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividend paid | $ |  | $ 10,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend declared, value per share | ₪ / shares |  |  |  |  |  |  |  |  |  |  |  |  |  | ₪ 0.48 |
Dividends payable date |  |  |  |  |  |  |  |  |  |  |  |  |  | 2019-04 |
[1] | See Note 14A5

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