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COMMON UNIT-BASED COMPENSATION PLANS - SERP and Directors (Details) - SERP and Deferred Compensation Plans - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2023
Number of units |  |  |  |  |
Balance at the beginning of the period (in units) |  |  | 811,946 |  |
Granted (in units) |  |  | 53,770 |  |
Balance at the end of the period (in units) | 865,716 |  | 865,716 |  |
Weighted average grant date fair value per unit |  |  |  |  |
Balance at the beginning of the period (in dollars per unit) |  |  | $ 20.44 |  |
Granted (in dollars per unit) |  |  | 21.18 |  |
Balance at the end of the period (in dollars per unit) | $ 20.48 |  | $ 20.48 |  |
Intrinsic value (in dollars) |  |  |  |  |
Intrinsic value of outstanding grants (in dollars) | $ 21,175 |  | $ 21,175 |  | $ 17,197
Other information |  |  |  |  |
Unit-based compensation expense | 700 | $ 600 | 1,300 | $ 1,200 |
Total unit-based obligation recorded | $ 17,700 |  | $ 17,700 |  |

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- Definition The weighted average fair value of awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References No definition available. + Details
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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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