v3.26.3
Description of the business: - Leases (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Cash paid for amounts included in the measurement of lease liabilities          
Amortization of right-of-use assets $ 13,431 $ 13,331 $ 40,520 $ 41,222  
Interest expense on finance lease liabilities 12,452 11,858 37,437 35,473  
Operating lease cost 17,778 18,502 53,594 54,515  
Total lease costs $ 43,661 $ 43,691 131,551 131,210  
Operating cash flows from finance leases     (42,719) (34,079)  
Operating cash flows from operating leases     (55,467) (55,247)  
Financing cash flows from finance leases     (30,091) (25,314)  
Right-of-use assets obtained in exchange for new finance lease liabilities     58,734 107,665  
Right-of-use assets obtained in exchange for new operating lease liabilities     $ 5,816 $ 17,496  
Weighted-average remaining lease term - finance leases (in years) 16 years 7 months 6 days 16 years 9 months 18 days 16 years 7 months 6 days 16 years 9 months 18 days  
Weighted-average remaining lease term - operating leases (in years) 11 years 3 months 18 days 11 years 2 months 12 days 11 years 3 months 18 days 11 years 2 months 12 days  
Weighted-average discount rate - finance leases 8.30% 8.40% 8.30% 8.40%  
Weighted-average discount rate - operating leases 7.50% 7.80% 7.50% 7.80%  
Finance leases-fiber lease agreements          
Initial terms (in years) 20 years   20 years    
Additional finance lease future payments due $ 106,200   $ 106,200    
Future minimum payments under these operating lease agreements          
2027 62,077   62,077    
2028 58,383   58,383    
2029 54,169   54,169    
2030 30,340   30,340    
2031 27,301   27,301    
Thereafter 206,975   206,975    
Total minimum lease obligations 439,245   439,245    
Less-amounts representing interest (141,818)   (141,818)    
Present value of minimum lease obligations 297,427   297,427    
Current maturities (54,337)   (54,337)   $ (54,576)
Lease obligations, net of current maturities 243,090   243,090   269,753
Future minimum payments under these finance lease agreements          
2027 70,102   70,102    
2028 69,447   69,447    
2029 66,721   66,721    
2030 67,526   67,526    
2031 66,139   66,139    
Thereafter 807,212   807,212    
Total minimum lease obligations 1,147,147   1,147,147    
Less-amounts representing interest (525,050)   (525,050)    
Present value of minimum lease obligations 622,097   622,097    
Current maturities (20,190)   (20,190)   (26,112)
Lease obligations, net of current maturities $ 601,907   $ 601,907   $ 597,239
Minimum          
Finance leases-fiber lease agreements          
Initial terms (in years) 15 years   15 years    
Maximum          
Finance leases-fiber lease agreements          
Initial terms (in years) 20 years   20 years