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Natural Gas Properties & Other Property, Plant, and Equipment (Tables)
12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Following is a listing of useful lives for other property, plant, and equipment:

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  ​ ​ ​

Useful Life

Buildings

 

39 years

Plant facility

 

15 to 30 years

Carbon capture, utilization, and sequestration

 

12 years

Furniture, fixtures, equipment, vehicles, and other

 

5 to 15 years

Computer hardware and software

 

3 to 5 years

Leasehold improvements

 

7 to 10 years

Midstream assets consisted of the following:

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​

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December 31,

(in thousands)

  ​ ​ ​

2025

  ​ ​ ​

2024

Compressor station

​

$

33,752

​

$

33,461

Meter station

​

 

67

​

 

67

Pipelines

​

 

244,155

​

 

243,116

Total

​

 

277,974

​

 

276,644

Accumulated depreciation

​

 

(23,770)

​

 

(17,285)

Midstream assets, net

​

$

254,204

​

$

259,359

Other property, plant, and equipment consisted of the following:

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​

​

​

​

​

​

​

​

December 31,

(in thousands)

  ​ ​ ​

2025

  ​ ​ ​

2024

Plant facility

​

$

926,092

​

$

924,779

Carbon capture, utilization, and sequestration

​

 

114,261

​

 

69,743

Buildings

​

 

6,746

​

 

15,707

Furniture, fixtures, equipment, and vehicles

​

 

27,643

​

 

24,540

Computer software

​

 

8,461

​

 

5,595

Leasehold improvements

​

 

1,685

​

 

1,685

Land

​

 

8,090

​

 

4,589

Construction in process

​

 

6,350

​

 

3,575

Total

​

 

1,099,328

​

 

1,050,213

Accumulated depreciation

​

 

(154,916)

​

 

(113,416)

Other property, plant, and equipment, net

​

$

944,412

​

$

936,797