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Income Taxes
 12 Months Ended
Dec. 31, 2025
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The Partnership is a limited partnership and is treated as a partnership for U.S. federal income tax purposes and, therefore, is not liable for entity-level federal income taxes. The Partnership is, however, subject to state and local income taxes.
The components of income tax of the Partnership are as follows:
Year Ended December 31,
202520242023
Current
State and local$548 $921 $837 
Deferred
State and local(1)(86)(24)
Total provision$547 $835 $813 
The Partnership adopted ASU 2023-09 in the 2025 period and applied this standard prospectively. The adoption of this ASU resulted in additional income tax disclosures. The reconciliation of income tax expense at the U.S. statutory rate to the income tax expense is as follows:
Year Ended December 31,
2025
Amount
Percentage
Provision for federal income tax, at statutory rate$62,816 21.0 %
State income tax provision, net of federal income tax effect (1)
547 0.2 %
Partnership income not subject to entity-level federal income tax(62,816)(21.0)%
Total provision$547 0.2 %
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(1) State income taxes in Kentucky and Texas made up the majority (greater than 50 percent) of the tax effect in this category.
The comparative periods are presented under the previous guidance within Accounting Standards Codification 740. The reconciliation of income tax expense at the U.S. statutory rate to the income tax expense is as follows:
Year Ended December 31,
20242023
Provision for federal income tax, at statutory rate$77,699 $70,442 
State income tax provision, net of federal income tax effect835 813 
Partnership income not subject to entity-level federal income tax(77,699)(70,442)
Total provision$835 $813 
The tax effects of the principal temporary differences between financial reporting and income tax reporting are as follows:
December 31,
20252024
Property, plant and equipment$(1,199)$(1,323)
Turnaround costs(347)(223)
Total deferred tax liabilities$(1,546)$(1,546)
Balance sheet classifications
Noncurrent deferred tax liability$(1,546)$(1,546)
Total deferred tax liabilities$(1,546)$(1,546)