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COMMON UNIT-BASED COMPENSATION PLANS - SERP and Directors Comp (Details) - SERP and Deferred Compensation Plans - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Other information |  |  |  |  |
Unit-based compensation expense | $ 300 | $ 100 | $ 600 | $ 200 |
Total unit-based obligation recorded | $ 14,000 |  | $ 14,000 |  |
Phantom Share Units (PSUs) |  |  |  |  |
Number of units |  |  |  |  |
Balance at the beginning of the period (in units) |  |  | 668,698 |  |
Granted (in units) |  |  | 25,359 |  |
Balance at the end of the period (in units) | 694,057 |  | 694,057 |  |
Weighted average grant date fair value per unit |  |  |  |  |
Balance at the beginning of the period (in dollars per unit) |  |  | $ 20.37 |  |
Granted (in dollars per unit) |  |  | 15.80 |  |
Balance at the end of the period (in dollars per unit) | $ 20.20 |  | $ 20.20 |  |
Intrinsic value of outstanding grants (in dollars) | $ 12,653 |  | $ 12,653 |  | $ 8,452

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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