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STOCKHOLDERS' EQUITY - Stock Based Compensation - RSU metrics (Details) - USD ($) | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2024 | Jun. 30, 2024 | Aug. 31, 2023 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
RSUs |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |
Performance cycle |  |  |  | 3 years | 3 years | 3 years | 3 years | 3 years
Number of shares vested |  |  |  | 39,811 | 74,988 | 64,488 |  |
TSR awards |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |
Service period |  |  |  | 3 years |  |  |  |
Awards granted in 2021 to 2024 | RSUs |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |
Performance cycle |  |  |  | 3 years |  |  |  |
Accrual for dividend equivalent rights |  |  |  | $ 408,000 | $ 450,000 |  |  |
Awards granted in 2021 to 2024 | ROC Awards |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |
Weight |  |  |  | 50.00% |  |  |  |
Awards granted in 2021 to 2024 | ROC Awards | Minimum |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |
Average of annual ROC |  |  |  | 6.00% |  |  |  |
Awards granted in 2021 to 2024 | ROC Awards | Maximum |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |
Average of annual ROC |  |  |  | 8.75% |  |  |  |
Awards granted in 2021 to 2024 | TSR awards |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |
Weight |  |  |  | 50.00% |  |  |  |
Awards granted in 2021 to 2024 | TSR awards | Minimum |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |
Average of annual TSR |  |  |  | 6.00% |  |  |  |
Awards granted in 2021 to 2024 | TSR awards | Maximum |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |
Average of annual TSR |  |  |  | 11.00% |  |  |  |
Awards granted in 2024 | RSUs |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |
Aggregate fair value of the shares granted |  |  |  | $ 1,210,000 |  |  |  |
Awards granted in 2024 | TSR awards |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |
Expected life |  |  |  | 3 years |  |  |  |
Dividend rate |  |  |  | 7.03% |  |  |  |
Risk-free interest rate minimum |  |  |  | 4.26% |  |  |  |
Risk-free interest rate maximum |  |  |  | 5.17% |  |  |  |
Expected price volatility minimum |  |  |  | 22.79% |  |  |  |
Expected price volatility maximum |  |  |  | 24.80% |  |  |  |
Awards granted in 2023 | RSUs |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |
Aggregate fair value of the shares granted |  |  |  |  | $ 927,000 |  |  |
Awards granted in 2023 | TSR awards |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |
Expected life |  |  |  | 3 years |  |  |  |
Dividend rate |  |  |  | 8.72% |  |  |  |
Risk-free interest rate minimum |  |  |  | 4.42% |  |  |  |
Risk-free interest rate maximum |  |  |  | 5.28% |  |  |  |
Expected price volatility minimum |  |  |  | 28.69% |  |  |  |
Expected price volatility maximum |  |  |  | 30.05% |  |  |  |
Awards granted in 2022 | RSUs |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |
Aggregate fair value of the shares granted |  |  |  |  |  | $ 1,419,000 |  |
Awards granted in 2022 | TSR awards |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |
Expected life |  |  |  | 3 years |  |  |  |
Dividend rate |  |  |  | 7.10% |  |  |  |
Risk-free interest rate minimum |  |  |  | 1.58% |  |  |  |
Risk-free interest rate maximum |  |  |  | 3.33% |  |  |  |
Expected price volatility minimum |  |  |  | 29.37% |  |  |  |
Expected price volatility maximum |  |  |  | 39.87% |  |  |  |
Awards granted in 2021 | RSUs |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |
Performance cycle |  | 3 years |  |  |  |  |  |
Payment of dividends to RSU grant holders | $ 215,000 |  |  |  |  |  |  |
Number of shares vested | 39,811 |  |  |  |  |  |  |
Awards granted in 2020 | RSUs |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |
Number of shares vested |  |  | 74,988 |  |  |  |  |

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- Definition The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References No definition available. + Details
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