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v3.21.1

PARTNERS' CAPITAL (Tables) | 3 Months Ended
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Mar. 31, 2021
PARTNERS' CAPITAL |
Summary of quarterly per unit distribution paid | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Payment Date |  | Per Unit Cash Distribution |  | Total Cash Distribution |
​ | ​ | ​ | ​ | ​ | (in thousands) | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
February 14, 2020 | ​ | $ | 0.4000 | ​ | $ | 51,753 | ​
Total | ​ | $ | 0.4000 | ​ | $ | 51,753 | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
May 14, 2021 (1) | ​ | $ | 0.1000 | ​ | $ | — | ​
Total | ​ | $ | 0.1000 | ​ | $ | — | ​
(1) | On April 26, 2021, we declared this quarterly distribution payable on May 14, 2021 to all unitholders of record as of May 7, 2021.
Summary of changes to Partners' Capital | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | Accumulated | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Number of | ​ | Limited | ​ | Other | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Limited Partner | ​ | Partners' | ​ | Comprehensive | ​ | Noncontrolling | ​ | Total Partners' | ​
​ |  | Units |  | Capital |  | Income (Loss) |  | Interest |  | Capital |
​ | ​ | (in thousands, except unit data) | ​
Balance at January 1, 2021 |  | 127,195,219 | ​ | $ | 1,148,565 | ​ | $ | (87,674) | ​ | $ | 11,376 | ​ | $ | 1,072,267 | ​
Comprehensive income: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income |  | — | ​ |  | 24,748 | ​ |  | — | ​ | ​ | 78 |  |  | 24,826 | ​
Actuarially determined long-term liability adjustments |  | — | ​ |  | — | ​ |  | 2,231 | ​ |  | — |  |  | 2,231 | ​
Total comprehensive income |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | ​ | 27,057 | ​
Common unit-based compensation |  | — | ​ |  | 723 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 723 | ​
Distributions from consolidated company to noncontrolling interest | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (141) | ​ | ​ | (141) | ​
Balance at March 31, 2021 |  | 127,195,219 | ​ | $ | 1,174,036 | ​ | $ | (85,443) | ​ | $ | 11,313 | ​ | $ | 1,099,906 | ​
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | Accumulated | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Number of | ​ | Limited | ​ | Other | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Limited Partner | ​ | Partners' | ​ | Comprehensive | ​ | Noncontrolling | ​ | Total Partners' | ​
​ |  | Units |  | Capital |  | Loss |  | Interest |  | Capital |
​ | ​ | (in thousands, except unit data) | ​
Balance at January 1, 2020 |  | 126,915,597 | ​ | $ | 1,331,482 | ​ | $ | (77,993) | ​ | $ | 11,935 | ​ | $ | 1,265,424 | ​
Comprehensive income (loss): | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income (loss) |  | — | ​ |  | (144,783) | ​ |  | — | ​ | ​ | 76 |  |  | (144,707) | ​
Actuarially determined long-term liability adjustments |  | — | ​ |  | — | ​ |  | 938 | ​ |  | — |  |  | 938 | ​
Total comprehensive loss |  | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | ​ | (143,769) | ​
Settlement of deferred compensation plans | ​ | 279,622 | ​ | ​ | (1,310) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (1,310) | ​
Common unit-based compensation |  | — | ​ |  | (527) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (527) | ​
Distributions on deferred common unit-based compensation |  | — | ​ |  | (986) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (986) | ​
Distributions from consolidated company to noncontrolling interest | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (288) | ​ | ​ | (288) | ​
Distributions to Partners |  | — | ​ | ​ | (50,767) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (50,767) | ​
Other | ​ | — | ​ | ​ | (273) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (273) | ​
Balance at March 31, 2020 |  | 127,195,219 | ​ | $ | 1,132,836 | ​ | $ | (77,055) | ​ | $ | 11,723 | ​ | $ | 1,067,504 | ​

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