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Income Taxes (Tables)

12 Months Ended

Dec. 31, 2025

Income Taxes

Schedule of income before income taxes

​

​	​	​	​	​	​	​	​	​	​
​	​	Year Ended December 31,
(in thousands)	​	2025		​ ​ ​	2024		​ ​ ​	2023
U.S.	​ ​ ​ ​ ​	$	423,638	​ ​ ​ ​ ​	$	232,380	​ ​ ​ ​ ​	$	142,247
Foreign	​	​	—	​	​	—	​	​	—
Total	​	$	423,638	​	$	232,380	​	$	142,247

Schedule of provision for income taxes

​

​	​	​	​	​	​	​	​	​	​
​	​	Year Ended December 31,
(in thousands)	​ ​ ​	2025		​ ​ ​	2024		​ ​ ​	2023
Current tax provision:	​	​	​	​	​	​	​	​	​
U.S. federal	​	$	424	​	$	—	​	$	—
State	​		2,630	​		2,059	​		1,591
Total current	​	​	3,054	​	​	2,059	​	​	1,591
Deferred tax provision:	​	​	​	​	​	​	​	​	​
U.S. federal	​	​	91,880	​	​	53,340	​	​	32,928
State	​		5,911	​		4,750	​		2,730
Total deferred	​	​	97,791	​	​	58,090	​	​	35,658
Provision for income taxes	​	$	100,845	​	$	60,149	​	$	37,249

Schedule of Income taxes paid, net

​

​	​	​	​	​	​	​	​	​	​
​	​	Year Ended December 31,
(in thousands)	​	2025		​	2024		​	2023
U.S. Federal	​ ​ ​	$	1,145	​ ​ ​	$	350	​ ​ ​	$	—
State	​		​	​		​	​		​
Texas	​		1,706	​		1,204	​		1,020
New Mexico	​		193	​		162	​		—
Pennsylvania	​	​	109	​	​	190	​	​	220
Louisiana	​	​	40	​	​	180	​	​	30
Other	​		97	​		124	​		41
Total income taxes paid, net	​	$	3,290	​	$	2,210	​	$	1,311

Reconciliation of effective tax rates to the U.S. statutory rate

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Year Ended December 31,

​

(in thousands)

​

2025

​

​

2024

​

​

2023

​

U.S. Federal statutory tax rate

​ ​ ​

$

88,964

​ ​ ​

21.0

%

​

$

48,800

​ ​ ​

21.0

%

​

$

29,872

​

21.0

%

State and local income taxes, net of federal income tax effect (1)

​

6,907

​

1.6

​

​

5,425

​

2.3

​

​

3,550

​

2.5

​

Changes in valuation allowance (2)

​

(70)

​

0.0

​

​

257

​

0.1

​

​

634

​

0.4

​

Nontaxable or nondeductible items

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Executive compensation limitation

​

​

9,455

​

2.2

​

​

​

7,146

​

3.1

​

​

​

3,470

​

2.4

​

Benefit from equity-settled long-term incentive compensation

​

​

(5,801)

​

(1.4)

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​

​

(1,569)

​

(0.7)

​

​

​

(213)

​

(0.1)

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Other

​

​

1,148

​

0.3

​

​

​

(139)

​

(0.1)

​

​

​

(182)

​

(0.1)

​

Changes in unrecognized tax benefits(3)

​

242

​

0.1

​

​

229

​

0.1

​

​

118

​

0.1

​

Effective tax rate

​

$

100,845

​

23.8

%

​

$

60,149

​

25.9

%

​

$

37,249

​

26.2

%

(1) During the years ended December 31, 2025 and 2024, state taxes in New Mexico made up greater than 50% of the tax effect in this category. During the year ended December 31, 2023, state taxes in New Mexico and Texas made up greater than 50% of the tax effect in this category.

(2) See “Tax Attributes and Valuation Allowances” below for further details.

(3) Includes the expiration of statute of limitations. See “Unrecognized Tax Benefits” below for further details.

Schedule of deferred income tax balances

​

​	​	​	​	​	​	​
​	​	December 31,
(in thousands)	​	2025		​	2024
Deferred tax assets:	​ ​ ​	​	​	​ ​ ​	​	​
Net operating loss carryforwards	​	$	147,123	​	$	143,412
Interest expense limitation carryforward	​		25,420	​		41,555
Basis difference in unconsolidated affiliate	​	​	872	​	​	943
Goodwill and intangible assets	​	​	24,255	​	​	40,201
Accrued liabilities	​		8,329	​		8,351
Other	​		11,934	​		12,822
​	​	​	217,933	​	​	247,284
Valuation allowances (1)	​		(1,441)	​		(1,462)
Total deferred tax assets	​	​	216,492	​	​	245,822
​	​	​	​	​	​	​
Deferred tax liabilities:	​		​	​		​
Property, plant and equipment	​	​	(159,165)	​	​	(78,477)
Basis difference in partnership	​		(245,941)	​		(221,149)
Other	​		(7,636)	​		(5,726)
Total deferred tax liabilities	​		(412,742)	​		(305,352)
​	​	​	​	​	​	​
Net deferred tax liability (2)	​	$	(196,250)	​	$	(59,530)

(1) See “Tax Attributes and Valuation Allowances” below for further details.

(2) The net deferred tax liability as of December 31, 2025 and 2024 is reflected in our consolidated balance sheets as deferred tax assets of $2.1 million and $3.0 million, respectively, and deferred tax liabilities of $198.3 million and $62.5 million, respectively.

Schedule of changes in valuation allowance

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​	​	​	​	​	​	​	​	​	​
​	​	Year Ended December 31,
(in thousands)	​	2025		​ ​ ​	2024		​ ​ ​	2023
Balance at beginning of period	​ ​ ​ ​ ​	$	(1,462)	​ ​ ​ ​ ​	$	(1,177)	​ ​ ​ ​ ​	$	(607)
Additions to valuation allowance	​	​	(141)	​	​	(455)	​	​	(742)
Reductions to valuation allowance	​	​	162	​	​	170	​	​	172
Balance at end of period	​	$	(1,441)	​	$	(1,462)	​	$	(1,177)

Schedule of changes in unrecognized tax benefits

​

​	​	​	​	​	​	​	​	​	​
​	​	Year Ended December 31,
(in thousands)	​	2025		​ ​ ​	2024		​ ​ ​	2023
Beginning balance	​ ​ ​	$	19,467	​ ​ ​	$	19,465	​ ​ ​	$	19,651
Additions based on tax positions related to current year	​		2,558	​		2,402	​		1,886
Additions based on tax positions related to prior years	​		11,637	​		—	​		—
Reductions based on tax positions related to prior years	​		—	​		(18)	​		(7)
Reductions based on lapse of statute of limitations	​		(2,372)	​		(2,382)	​		(2,065)
Ending balance	​	$	31,290	​	$	19,467	​	$	19,465

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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-Topic 740
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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure of income before income tax between domestic and foreign jurisdictions.

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Tabular disclosure of the change in unrecognized tax benefits.

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Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance.

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