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NATURE OF OPERATIONS - IPO and Corporate Conversion (Details) $ / shares in Units, د.ت in Thousands, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 17, 2019 $ / shares shares | Jan. 01, 2018 shares | Jan. 31, 2019 USD ($) $ / shares shares | Dec. 31, 2018 USD ($) $ / shares shares | Dec. 31, 2020 TND (د.ت) $ / shares shares
Nature of operations |  |  |  |  |
Shares issued upon incorporation (in shares) |  | 20,000,000 |  |  |
Shares repurchased | 300,000 |  |  |  | 145,065
Share repurchase price (in dollars per share) | $ / shares | $ 10.20 |  |  |  | $ 9.77
Value of shares authorized for repurchase | د.ت |  |  |  |  | $ 10,000
IPO |  |  |  |  |
Nature of operations |  |  |  |  |
Shares issued from sale of common stock |  |  | 600,000 | 4,000,000 |
Share price (in dollars per share) | $ / shares |  |  | $ 12.00 | $ 12.00 |
Offering costs | $ |  |  | $ 505 | $ 4,504 |
Proceeds from IPO net of underwriting discounts and offering expenses | $ |  |  | $ 6,695 | $ 43,492 |

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