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COMMON UNIT-BASED COMPENSATION PLANS (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2024
ARLP LTIP |
COMMON UNIT-BASED COMPENSATION PLANS |
Summary of non-vested share activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Number of units |  | Weighted average grant date fair value per unit |  | Intrinsic value |
​ | ​ | ​ | ​ | ​ | ​ | ​ | (in thousands) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Non-vested grants at January 1, 2024 | ​ | 2,710,344 | ​ | $ | 10.91 | ​ | ​ | 51,405 | ​
Granted (1) |  | 455,574 | ​ | ​ | 19.69 | ​ | ​ | ​ | ​
Vested (2) |  | (1,582,422) | ​ |  | 6.53 | ​ | ​ | ​ | ​
Forfeited |  | (38,204) | ​ |  | 16.08 | ​ | ​ | ​ | ​
Non-vested grants at June 30, 2024 |  | 1,545,292 | ​ |  | 17.87 | ​ | ​ | 37,798 | ​
(1) | The restricted units granted during 2024 have certain minimum-value guarantees per unit, regardless of whether the awards vest.
(2) | During the six months ended June 30, 2024, we issued 936,544 unrestricted common units to the LTIP participants. The remaining vested units were settled in cash to satisfy tax withholding.
SERP and Deferred Compensation Plans |
COMMON UNIT-BASED COMPENSATION PLANS |
Summary of activity in share-based plans | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Number of units |  | Weighted average grant date fair value per unit |  | Intrinsic value |
​ | ​ | ​ | ​ | ​ | ​ | ​ | (in thousands) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Phantom units outstanding as of January 1, 2024 | ​ | 811,946 | ​ | $ | 20.44 | ​ | $ | 17,197 | ​
Granted | ​ | 53,770 | ​ | ​ | 21.18 | ​ | ​ | ​ | ​
Phantom units outstanding as of June 30, 2024 |  | 865,716 | ​ |  | 20.48 | ​ | ​ | 21,175 | ​
​

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