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PARTNERS' CAPITAL | 12 Months Ended
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Dec. 31, 2022
PARTNERS' CAPITAL |
PARTNERS' CAPITAL | 12.PARTNERS' CAPITAL ​ Distributions ​ Our available cash that is not used for unit repurchases may, at the discretion of our general partner, be distributed within 45 days after the end of each quarter to unitholders of record. Available cash is generally defined in the partnership agreement as all cash and cash equivalents on hand at the end of each quarter less reserves established by MGP in its reasonable discretion for future cash requirements. These reserves are retained to provide for the conduct of our business, the payment of debt principal and interest and to provide funds for future distributions. The following table summarizes the quarterly per unit distribution paid during each quarter of 2020 through 2022: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended December 31, |
​ |  | 2022 |  | 2021 |  | 2020 |
First Quarter | ​ | $ | 0.250 | ​ | $ | — | ​ | $ | 0.400 | ​
Second Quarter | ​ | $ | 0.350 | ​ | $ | 0.100 | ​ | $ | — | ​
Third Quarter | ​ | $ | 0.400 | ​ | $ | 0.100 | ​ | $ | — | ​
Fourth Quarter | ​ | $ | 0.500 | ​ | $ | 0.200 | ​ | $ | — | ​
​ On January 27, 2023, we declared a quarterly distribution of $0.70 per unit, totaling approximately $89.0 million, on all our common units outstanding, which was paid on February 14, 2023, to all unitholders of record on February 7, 2023. ​ Unit Repurchase Program ​ In May 2018, the board of directors of our general partner ("Board of Directors") approved the establishment of a unit repurchase program authorizing us to repurchase and retire up to $100 million of ARLP common units. The program has no time limit and we may repurchase units from time to time in the open market or in other privately negotiated transactions. The unit repurchase program authorization does not obligate us to repurchase any dollar amount or number of units. No unit repurchases were made during the year ended December 31, 2022. Since inception of the unit repurchase program, we have repurchased and retired 5,460,639 units at an average unit price of $17.12 for an aggregate purchase price of $93.5 million. ​ In January 2023, the Board of Directors authorized a $93.5 million increase to the unit repurchase program, which had $6.5 million of available capacity as of December 31, 2022. As a result, we are authorized to repurchase up to a total of $100.0 million of ARLP common units. As of February 24, 2023, we have repurchased and retired 856,629 units at an average unit price of $21.15 for an aggregate purchase price of $18.1 million since we increased the amount authorized under the unit repurchase program. ​ Other ​ The noncontrolling interest in our consolidated balance sheets represents Bluegrass Minerals Management, LLC's ("Bluegrass Minerals") ownership interest in Cavalier Minerals JV, LLC ("Cavalier Minerals"). Our accumulated other comprehensive loss consists of unrecognized actuarial gains and losses as well as unrecognized prior service costs related to our pension and pneumoconiosis benefits. See Note 13 – Variable Interest Entities, Note 17 –Employee Benefit Plans and Note 21 – Accrued Workers' Compensation and Pneumoconiosis Benefits for further information.

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- Definition The entire disclosure for the formation, structure, control and ownership of the partnership. Disclosures related to accounts comprising partners' capital. Includes balances of general partners' capital account, limited partners' capital account, preferred partners' capital account and total partners' capital account and units outstanding; accumulated other comprehensive income; amount and nature of changes to amount of partner's capital and units outstanding by class, rights and privileges for each class of units; distribution policies and distributions paid by unit class; impact of and correction of an error in previously issued financial statements; limitations of partners' liability; redemption, conversion and distribution policies; and deferred compensation related to the issuance of units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI https://asc.fasb.org/topic&trid=2208762 + Details
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