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SHAREHOLDERS EQUITY - Additional Information (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jul. 25, 2019
Class Of Stock [Line Items] |  |  |  |
Stock repurchase program, number of shares authorized to be repurchased, percentage |  |  |  | 5.00%
Stock repurchase program, number of shares authorized to be repurchased | 960,000 |  |  | 960,000
Shares purchased | 220,222 | 739,778 |  |
Shares repurchased, average price per share | $ 29.45 | $ 28.39 |  |
Shares repurchased during period, value | $ 6,487,000 | $ 21,002,000 |  |
Stock repurchase program average price per share | $ 28.63 |  |  |
Stock repurchase total cost | $ 27,500,000 |  |  |
Quarterly cash payment that may be made under Dividend Reinvestment Program | $ 200,000 |  |  |
Percent of fair market value which shares may be purchased at under the DRIP |  |  | 97.00% |
Fair market value discount |  |  | 3.00% |
Plan [Member] |  |  |  |
Class Of Stock [Line Items] |  |  |  |
Purchase of shares (dividend reinvestment program), shares | 97,032 | 129,738 |  |

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