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Distributions and Net Income Per Limited Partner Unit (Tables) | 12 Months Ended
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Dec. 31, 2025
Earnings Per Share [Abstract] |
Schedule of Distributions | Distributions are declared subsequent to quarter end; therefore, the table below represents total cash distributions declared from earnings of the related periods pertaining to such distributions.
|  |  | Year Ended December 31,
|  |  |  |  | 2025 |  | 2024 |  | 2023
Net income attributable to the Partnership |  |  |  |  | $ | 48,698 |  |  | $ | 62,392 |  |  | $ | 54,283 |
Less: |  |  |  |  |  |  |  |  |
Limited partners' distribution declared on common units |  |  |  |  | 66,453 |  |  | 66,437 |  |  | 66,421 |
Distribution in excess of net income |  |  |  |  | $ | (17,755) |  |  | $ | (4,045) |  |  | $ | (12,138) |
Schedule of Earnings Per Share, Basic and Diluted |
|  | Year Ended December 31, 2025
|  | Limited Partners' Common Units |  |  |  | Incentive Distribution Rights |  | Total
Net income attributable to the Partnership: |  |  |  |  |  |  |  |
Distribution |  | $ | 66,453 |  |  |  |  | $ | — |  |  | $ | 66,453 |
Distribution in excess of net income |  | (17,755) |  |  |  |  | — |  |  | (17,755) |
Net income |  | $ | 48,698 |  |  |  |  | $ | — |  |  | $ | 48,698 |
Weighted average units outstanding: |  |  |  |  |  |  |  |
Basic and diluted |  | 35,241,505 |  |  |  |  |  |  | 35,241,505 |
Net income per limited partner unit: |  |  |  |  |  |  |  |
Basic and diluted |  | $ | 1.38 |  |  |  |  |  |  |
|  | Year Ended December 31, 2024
|  | Limited Partners' Common Units |  | Incentive Distribution Rights |  | Total
Net income attributable to the Partnership: |  |  |  |  |  |
Distribution |  | $ | 66,437 |  |  | $ | — |  |  | $ | 66,437 |
Distribution in excess of net income |  | (4,045) |  |  | — |  |  | (4,045) |
Net income |  | $ | 62,392 |  |  | $ | — |  |  | $ | 62,392 |
Weighted average units outstanding: |  |  |  |  |  |
Basic and diluted |  | 35,232,870 |  |  |  |  | 35,232,870 |
Net income per limited partner unit: |  |  |  |  |  |
Basic and diluted |  | $ | 1.77 |  |  |  |  |
|  | Year Ended December 31, 2023
|  | Limited Partners' Common Units |  | Incentive Distribution Rights |  | Total
Net income attributable to the Partnership: |  |  |  |  |  |
Distribution |  | $ | 66,421 |  |  | $ | — |  |  | $ | 66,421 |
Distribution in excess of net income |  | (12,138) |  |  | — |  |  | (12,138) |
Net income |  | $ | 54,283 |  |  | $ | — |  |  | $ | 54,283 |
Weighted average units outstanding: |  |  |  |  |  |
Basic and diluted |  | 35,224,340 |  |  |  |  | 35,224,340 |
Net income per limited partner unit: |  |  |  |  |  |
Basic and diluted |  | $ | 1.54 |  |  |  |  |
Distributions Made to Limited Partner, by Distribution | The amended Partnership Agreement provides that the Partnership will distribute cash that is deemed to be an appropriate portion of the Partnership's total operating surplus. If cash distributions to the Partnership's unitholders exceed $1.2938 per common unit in any quarter, the Partnership's unitholders and Westlake, as the holder of the Partnership's incentive distribution rights, will receive distributions according to the following percentage allocations:
|  | Marginal Percentage Interest in Distributions
Total Quarterly Distribution Per Unit |  | Unitholders |  | IDR Holders
Above $1.2938 up to $1.4063 |  | 85.0 | % |  | 15.0 | %
Above $1.4063 up to $1.6875 |  | 75.0 | % |  | 25.0 | %
Above $1.6875 |  | 50.0 | % |  | 50.0 | %
The Partnership's distribution for each quarter in the year ended December 31, 2025 did not exceed the $1.2938 per unit threshold, and, as a result, no distribution was made with respect to the Partnership's incentive distribution rights to Westlake, as the holder of the Partnership's incentive distribution rights. Distribution Per Common Unit Distributions per common unit for the years ended December 31, 2025, 2024 and 2023 were as follows:
|  | Year Ended December 31,
|  | 2025 |  | 2024 |  | 2023
Distributions per common unit |  | $ | 1.8856 |  |  | $ | 1.8856 |  |  | $ | 1.8856 |

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- Definition Tabular disclosure of payment of cash or stock made to limited partner of limited partnership (LP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1 + Details
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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 -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482662/260-10-50-1 + Details
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