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STOCK-BASED COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Additional disclosures |  |  |  |
Stock based compensation expense, net of forfeitures | $ 931 | $ 866 | $ 1,720 | $ 1,540
Restricted Stock |  |  |  |
STOCK-BASED COMPENSATION |  |  |  |
Weighted average market value (in dollars per share) | $ 32.92 |  |  |
Service period over which value of the shares is amortized to compensation expense |  |  | 3 years |
Number of Non-vested Restricted Shares |  |  |  |
Outstanding at beginning of period (in shares) |  |  | 186,702 |
Awarded (in shares) | 146,437 |  | 146,437 |
Vested (in shares) |  |  | (88,128) |
Forfeited (in shares) |  |  | (1,811) |
Outstanding at end of period (in shares) | 243,200 |  | 243,200 |
Restricted Stock | Performance based vesting |  |  |  |
Number of Non-vested Restricted Shares |  |  |  |
Awarded (in shares) | 100,403 |  |  |

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