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NATURE OF OPERATIONS - IPO and Corporate Conversion (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 1 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Apr. 17, 2019 | Jan. 01, 2018 | Jan. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Nature of operations |  |  |  |  |  |
Shares issued upon incorporation (in shares) |  | 20,000,000 |  |  |  |
Offering costs |  |  |  |  | $ 505 | $ 4,504
Shares repurchased | 300,000 |  |  |  |  |
Share repurchase price (in dollars per share) | $ 10.20 |  |  |  |  |
Stock Repurchase Program, Authorized Amount | $ 10,000 |  |  |  |  |
IPO |  |  |  |  |  |
Nature of operations |  |  |  |  |  |
Shares issued from sale of common stock |  |  | 600,000 | 4,000,000 |  |
Share price (in dollars per share) |  |  | $ 12.00 | $ 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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