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Property, Plant and Equipment - Table (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Property, plant and equipment [Abstract]    
Total property, plant and equipment $ 1,314,553 $ 1,156,318
Less: accumulated depreciation and amortization (492,059) (468,765)
Property, plant and equipment, net 822,494 687,553
Land    
Property, plant and equipment [Abstract]    
Total property, plant and equipment $ 3,521 3,722
Land improvements    
Property, plant and equipment [Abstract]    
Estimated Useful Lives 10 years  
Total property, plant and equipment $ 3,610 3,483
Buildings and structures    
Property, plant and equipment [Abstract]    
Total property, plant and equipment $ 95,170 93,461
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 $ 721,441 593,771
Cable and fiber | Minimum    
Property, plant and equipment [Abstract]    
Estimated Useful Lives 15 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 $ 323,422 317,347
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 8 years  
Plant in service    
Property, plant and equipment [Abstract]    
Total property, plant and equipment $ 1,147,164 1,011,784
Plant under construction    
Property, plant and equipment [Abstract]    
Total property, plant and equipment $ 167,389 $ 144,534