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Summary of Significant Accounting Policies - Narrative (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
USD ($)
segment
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Finite-Lived Intangible Assets [Line Items]      
Advertising expense $ 11,400 $ 6,800 $ 4,400
Capitalized interest costs 5,400 700  
Employer contributions 2,900    
Other comprehensive income (loss), defined benefit plan, settlement and curtailment gain (loss), after tax 700    
Fair value of projected benefit obligations $ 3,943 3,758  
Net benefit plan obligation   3,400  
Number of operating segments | segment 2    
Number of reportable segments | segment 2    
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]: 2023-01-01      
Finite-Lived Intangible Assets [Line Items]      
Performance obligation period 1 year    
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    
Ntelos Holding, Corp | Pension Plan      
Finite-Lived Intangible Assets [Line Items]      
Fair value of pension plan assets   21,300  
Fair value of projected benefit obligations   $ 24,700  
Discount rate (as a percent)   4.90%  
Ntelos Pension Plan      
Finite-Lived Intangible Assets [Line Items]      
Pension benefits, vesting period 5 years    
Vesting reductions, threshold age of recipient 65 years    
Postretirement medical benefits plan      
Finite-Lived Intangible Assets [Line Items]      
Fair value of projected benefit obligations $ 1,653 $ 1,869  
Discount rate (as a percent) 4.90% 5.00%