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Net Income Per Unit (Tables) | 9 Months Ended
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Sep. 30, 2021
Earnings Per Share [Abstract] |
Summary of Cash Distributions | The calculation of net income per unit is as follows (dollars in thousands, except units and per unit amounts):
| Three Months Ended September 30, |  | Nine Months Ended September 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Net income attributable to partners | $ | 43,624 |  |  | $ | 46,328 |  |  | $ | 123,137 |  |  | $ | 118,539 |
Less: General partner's distribution (including IDRs) (1) | — |  |  | — |  |  | — |  |  | 18,618 |
Less: Limited partners' distribution | 41,286 |  |  | 39,307 |  |  | 122,100 |  |  | 87,536 |
Earnings in excess (deficit) of distributions | $ | 2,338 |  |  | $ | 7,021 |  |  | $ | 1,037 |  |  | $ | 12,385 |
General partner's earnings: |  |  |  |  |  |  |
Distributions (including IDRs) (1) | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 18,618 |
Allocation of earnings in excess (deficit) of distributions | — |  |  | — |  |  | — |  |  | 106 |
Total general partner's earnings | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 18,724 |
Limited partners' earnings on common units: |  |  |  |  |  |  |
Distributions | $ | 41,286 |  |  | $ | 39,307 |  |  | $ | 122,100 |  |  | $ | 87,536 |
Allocation of earnings in excess (deficit) of distributions | 2,338 |  |  | 7,021 |  |  | 1,037 |  |  | 12,279 |
Total limited partners' earnings on common units | $ | 43,624 |  |  | $ | 46,328 |  |  | $ | 123,137 |  |  | $ | 99,815 |
Weighted average limited partner units outstanding: |  |  |  |  |  |  |
Common units - basic | 43,454,535 |  |  | 36,889,761 |  |  | 43,447,739 |  |  | 30,290,051 |
Common units - diluted | 43,468,289 |  |  | 36,894,043 |  |  | 43,457,857 |  |  | 30,292,261 |
Net income per limited partner unit: |  |  |  |  |  |  |
Common units - basic | $ | 1.00 |  |  | $ | 1.26 |  |  | $ | 2.83 |  |  | $ | 3.30 |
Common units - diluted (2) | $ | 1.00 |  |  | $ | 1.26 |  |  | $ | 2.83 |  |  | $ | 3.30 |
(1) Prior to August 13, 2020, general partner distributions (including IDRs) consisted of the 2.0% general partner interest and IDRs, which represented the right of the general partner to receive increasing percentages of quarterly distributions of available cash from operating surplus in excess of 0.43125 per unit per quarter. In connection with the IDR Restructuring Transaction on August 13, 2020, the IDRs were eliminated and the general partner interest became a non-economic general partner interest. (2) There were no outstanding common units excluded from the diluted earnings per unit calculation for the three and nine months ended September 30, 2021 and 2020.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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