v3.26.1
Revenue and Deferred Revenue - Remaining performance obligation (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Revenue remaining performance obligation $ 38.1 $ 34.0
Performance obligation not yet started 3.7 3.6
Network design and installation    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Revenue remaining performance obligation 7.6 8.2
Internet network services and hardware and internet service    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Revenue remaining performance obligation 30.5 25.8
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Revenue remaining performance obligation   $ 13.4
Expected timing of satisfaction   1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-04-01    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Revenue remaining performance obligation $ 13.7  
Expected timing of satisfaction 3 months  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Revenue remaining performance obligation $ 24.4 $ 21.5
Expected timing of satisfaction 6 years 6 years