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Property, Plant and Equipment - Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Jun. 30, 2025 | Dec. 31, 2024
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Property, plant and equipment [Abstract] |  |
Total property, plant and equipment | $ 2,122,629 | $ 1,980,111
Less: accumulated depreciation and amortization | (598,635) | (541,573)
Property, plant and equipment, net | 1,523,994 | 1,438,538
Total plant in service |  |
Property, plant and equipment [Abstract] |  |
Total property, plant and equipment | 1,892,910 | 1,772,683
Land |  |
Property, plant and equipment [Abstract] |  |
Total property, plant and equipment | $ 4,514 | 4,514
Land improvements |  |
Property, plant and equipment [Abstract] |  |
Estimated Useful Lives | 10 years |
Total property, plant and equipment | $ 3,777 | 3,717
Buildings and structures |  |
Property, plant and equipment [Abstract] |  |
Total property, plant and equipment | $ 53,509 | 52,706
Buildings and structures | Minimum |  |
Property, plant and equipment [Abstract] |  |
Estimated Useful Lives | 10 years |
Buildings and structures | Maximum |  |
Property, plant and equipment [Abstract] |  |
Estimated Useful Lives | 45 years |
Cable and fiber |  |
Property, plant and equipment [Abstract] |  |
Total property, plant and equipment | $ 1,385,739 | 1,294,689
Cable and fiber | Minimum |  |
Property, plant and equipment [Abstract] |  |
Estimated Useful Lives | 12 years |
Cable and fiber | Maximum |  |
Property, plant and equipment [Abstract] |  |
Estimated Useful Lives | 30 years |
Equipment and software |  |
Property, plant and equipment [Abstract] |  |
Total property, plant and equipment | $ 445,371 | 417,057
Equipment and software | Minimum |  |
Property, plant and equipment [Abstract] |  |
Estimated Useful Lives | 4 years |
Equipment and software | Maximum |  |
Property, plant and equipment [Abstract] |  |
Estimated Useful Lives | 12 years |
Plant under construction |  |
Property, plant and equipment [Abstract] |  |
Total property, plant and equipment | $ 229,719 | $ 207,428

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