Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Property and Equipment) (Details)

v3.10.0.1
Summary of Significant Accounting Policies (Property and Equipment) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment [Line Items]      
Property and equipment $ 1,337,122 $ 1,362  
Property and equipment under capital leases 41,084 0  
Less accumulated depreciation 145,321 738  
Less accumulated amortization on property and equipment under capital leases 7,195 0  
Net property and equipment 1,184,606 624  
Depreciation expense 153,500 200 $ 100
Capitalized interest costs $ 3,900    
Land and buildings      
Property, Plant and Equipment [Line Items]      
Useful lives 25 years    
Property and equipment $ 105,525 441  
Telephony transmission equipment and distribution facilities      
Property, Plant and Equipment [Line Items]      
Property and equipment $ 763,957 0  
Telephony transmission equipment and distribution facilities | Minimum      
Property, Plant and Equipment [Line Items]      
Useful lives 5 years    
Telephony transmission equipment and distribution facilities | Maximum      
Property, Plant and Equipment [Line Items]      
Useful lives 20 years    
Cable transmission equipment and distribution facilities      
Property, Plant and Equipment [Line Items]      
Property and equipment $ 100,391 0  
Cable transmission equipment and distribution facilities | Minimum      
Property, Plant and Equipment [Line Items]      
Useful lives 5 years    
Cable transmission equipment and distribution facilities | Maximum      
Property, Plant and Equipment [Line Items]      
Useful lives 30 years    
Studio equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment $ 3,315 0  
Studio equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Useful lives 10 years    
Studio equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Useful lives 15 years    
Support equipment and systems      
Property, Plant and Equipment [Line Items]      
Property and equipment $ 118,230 921  
Support equipment and systems | Minimum      
Property, Plant and Equipment [Line Items]      
Useful lives 3 years    
Support equipment and systems | Maximum      
Property, Plant and Equipment [Line Items]      
Useful lives 20 years    
Transportation equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment $ 16,066 0  
Transportation equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Useful lives 15 years    
Transportation equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Useful lives 13 years    
Customer premise equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment $ 21,351 0  
Customer premise equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Useful lives 2 years    
Customer premise equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Useful lives 20 years    
Fiber optic cable systems      
Property, Plant and Equipment [Line Items]      
Property and equipment $ 53,384 0  
Fiber optic cable systems | Minimum      
Property, Plant and Equipment [Line Items]      
Useful lives 15 years    
Fiber optic cable systems | Maximum      
Property, Plant and Equipment [Line Items]      
Useful lives 25 years    
Construction in progress      
Property, Plant and Equipment [Line Items]      
Property and equipment $ 113,819 $ 0