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Summary of Significant Accounting Policies - Narrative (Details)
$ / shares in Units, $ in Thousands
 12 Months Ended
Apr. 01, 2024
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
segment
$ / shares
shares
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Oct. 01, 2024
Finite-Lived Intangible Assets [Line Items]          
Advertising expense   $ 15,000 $ 11,400 $ 6,800  
Number of reportable segments | segment   1      
Estimated fair value of goodwill exceeded the carrying value, percentage         11.00%
Issuance of redeemable noncontrolling interest (in shares) | shares   81,000      
Issuance of redeemable noncontrolling interest, net of financing fees paid   $ 79,380      
Shentel Broadband Holding Inc. | Series A Preferred Stock          
Finite-Lived Intangible Assets [Line Items]          
Preferred stock, par value (in dollars per share) | $ / shares $ 0.01 $ 0.01      
Preferred stock, shares authorized (in shares) | shares 100,000        
Preferred stock, shares outstanding | shares   81,000      
Payments of stock issuance costs   $ 1,600      
Shentel Broadband Holding Inc. | Series A Preferred Stock | Energy Capital Partners          
Finite-Lived Intangible Assets [Line Items]          
Issuance of redeemable noncontrolling interest (in shares) | shares 81,000 81,000      
Issuance of redeemable noncontrolling interest, net of financing fees paid $ 81,000 $ 81,000      
Preferred stock, shares authorized (in shares) | shares   100,000      
Pension plan obligation          
Finite-Lived Intangible Assets [Line Items]          
Employer contributions     2,900    
Other comprehensive income (loss), defined benefit plan, settlement and curtailment gain (loss), after tax     $ 700    
Discount rate (as a percent)     5.00%    
Fair value of pension plan assets     $ 21,600    
Projected benefit obligation   $ 21,400      
Postretirement medical benefits plans          
Finite-Lived Intangible Assets [Line Items]          
Discount rate (as a percent)   5.50% 4.90%    
Minimum          
Finite-Lived Intangible Assets [Line Items]          
Indefinite-lived intangible assets, useful life   10 years      
Maximum          
Finite-Lived Intangible Assets [Line Items]          
Indefinite-lived intangible assets, useful life   15 years      
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01          
Finite-Lived Intangible Assets [Line Items]          
Performance obligation period     1 year    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01          
Finite-Lived Intangible Assets [Line Items]          
Performance obligation period   1 year 1 year    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01          
Finite-Lived Intangible Assets [Line Items]          
Performance obligation period   1 year