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STOCKHOLDERS' EQUITY - Stock Based Compensation - RSUs (Details) - USD ($) | 1 Months Ended | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 31, 2025 | Jul. 31, 2025 | Jun. 30, 2024 | Jun. 30, 2023 | Sep. 30, 2025 | Sep. 30, 2024 | Jun. 30, 2025 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Awards granted in 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted |  | 91,075 |  |  |  |  |  |  |  |  |  |  |
RSUs |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted |  |  |  |  | 91,075 | 88,250 |  | 91,075 | 88,250 |  |  |  |
Number of shares vested |  |  |  |  |  |  | 36,704 | 36,704 | 39,811 |  |  |  |
Number of shares forfeited |  |  |  |  |  |  |  | 48,036 | 39,811 |  |  |  |
Number of shares outstanding |  |  | 168,490 |  | 263,075 | 256,740 | 172,000 | 263,075 | 256,740 | 256,740 | 248,112 |  |
Performance cycle |  |  | 3 years | 3 years |  |  |  |  |  |  |  |  |
RSUs | Awards granted in 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares outstanding |  | 91,075 |  |  |  |  |  |  |  |  |  |  |
Aggregate fair value of the shares granted |  |  |  |  | $ 1,304,000 |  |  | $ 1,304,000 |  |  |  |  |
RSUs | Awards granted in 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted |  |  |  |  |  |  |  |  |  | 88,250 |  |  |
Number of shares forfeited |  |  |  |  |  |  | 750 |  |  |  |  |  |
Number of shares outstanding |  |  |  |  |  |  | 87,500 |  |  |  |  |  |
Aggregate fair value of the shares granted |  |  |  |  | 1,484,000 |  |  | 1,484,000 |  |  |  |  |
RSUs | Awards granted in 2023 |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted |  |  |  |  |  |  |  |  |  |  | 85,250 |  |
Number of shares forfeited |  |  |  |  |  |  | 750 |  |  |  |  |  |
Number of shares outstanding |  |  |  |  |  |  | 84,500 |  |  |  |  |  |
Aggregate fair value of the shares granted |  |  |  |  | 1,152,000 |  |  | $ 1,152,000 |  |  |  |  |
RSUs | Awards granted in 2022 |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted |  |  |  |  |  |  |  |  |  |  |  | 85,350 |
Number of shares vested | 36,704 |  |  |  |  |  |  |  |  |  |  |  |
Number of shares forfeited |  |  |  |  |  |  |  |  |  | 48,646 |  |  |
Number of shares forfeited due to applicable performance and market conditions not satisfied |  |  |  |  |  |  |  | 46,536 |  |  |  |  |
Number of shares forfeited due to retirement of executive officer before completion of applicable performance cycle |  |  |  | 2,110 |  |  |  |  |  |  |  |  |
Payment of dividends to RSU grant holders | $ 198,000 |  |  |  |  |  |  |  |  |  |  |  |
RSUs | Awards granted in 2021 |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Number of shares granted |  |  |  |  |  |  |  |  |  |  |  |  | 80,700
Number of shares vested |  |  | 39,811 |  |  |  |  |  |  |  |  |  |
Number of shares forfeited |  |  | 40,889 |  |  |  |  |  |  |  |  |  |
Number of shares forfeited due to applicable market condition not satisfied |  |  | 39,811 |  |  |  |  |  |  |  |  |  |
Number of shares forfeited due to retirement of executive officer before completion of applicable performance cycle |  |  |  | 1,078 |  |  |  |  |  |  |  |  |
Service period |  |  | 3 years |  |  |  |  |  |  |  |  |  |
RSUs | Awards Granted in 2023 to 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Accrual for dividend equivalent rights |  |  |  |  | $ 389,000 |  |  | $ 389,000 |  |  |  |  |
RSUs | Awards Granted in 2022 to 2024 |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Accrual for dividend equivalent rights |  |  |  |  |  |  |  |  |  | $ 408,000 |  |  |
ROC Awards | Awards Granted in 2022 to 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Weight |  |  |  |  |  |  |  | 50.00% | 50.00% |  |  |  |
ROC Awards | Awards Granted in 2022 to 2025 | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Average of annual ROC |  |  |  |  |  |  |  | 6.00% | 6.00% |  |  |  |
ROC Awards | Awards Granted in 2022 to 2025 | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Average of annual ROC |  |  |  |  |  |  |  | 8.75% | 8.75% |  |  |  |
TSR awards |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Service period |  |  |  |  |  |  |  | 3 years |  |  |  |  |
TSR awards | Awards granted in 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
Valuation assumptions |  |  |  |  |  |  |  |  |  |  |  |  |
Expected life |  |  |  |  |  |  |  | 3 years |  |  |  |  |
Dividend rate |  |  |  |  |  |  |  | 7.57% |  |  |  |  |
Risk-free interest rate minimum |  |  |  |  |  |  |  | 3.85% |  |  |  |  |
Risk-free interest rate maximum |  |  |  |  |  |  |  | 4.16% |  |  |  |  |
Expected price volatility minimum |  |  |  |  |  |  |  | 22.44% |  |  |  |  |
Expected price volatility maximum |  |  |  |  |  |  |  | 24.54% |  |  |  |  |
TSR awards | Awards Granted in 2022 to 2025 |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Weight |  |  |  |  |  |  |  | 50.00% | 50.00% |  |  |  |
TSR awards | Awards Granted in 2022 to 2025 | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Average of annual TSR |  |  |  |  |  |  |  | 6.00% | 6.00% |  |  |  |
TSR awards | Awards Granted in 2022 to 2025 | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
STOCKHOLDERS' EQUITY |  |  |  |  |  |  |  |  |  |  |  |  |
Average of annual TSR |  |  |  |  |  |  |  | 11.00% | 11.00% |  |  |  |

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- Definition Period over which performance is measured to determine award grants under the terms of the equity-based payment plan, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period due to market condition not met. + References No definition available. + Details
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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(03) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(02) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The estimated measure of the minimum 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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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