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Property and Equipment (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Property, Plant and Equipment [Line Items]      
Property and equipment, net $ 351,097   $ 348,259
Depreciation 20,300 $ 15,700  
Non-communications      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 264,443   249,172
Accumulated depreciation (151,813)   (142,270)
Property and equipment, net 112,630   106,902
Non-communications | Computer equipment and software      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 167,824   160,319
Non-communications | Computer equipment and software | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 1 year    
Non-communications | Computer equipment and software | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 5 years    
Non-communications | Building and building improvements      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 38,137   37,904
Non-communications | Building and building improvements | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 5 years    
Non-communications | Building and building improvements | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 48 years    
Non-communications | Office furniture and equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 21,942   21,245
Non-communications | Office furniture and equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 1 year    
Non-communications | Office furniture and equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 10 years    
Non-communications | Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 9,538   9,517
Non-communications | Leasehold improvements | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 1 year    
Non-communications | Leasehold improvements | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 15 years    
Non-communications | Transportation equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 5,032   5,049
Non-communications | Transportation equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 5 years    
Non-communications | Transportation equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 10 years    
Non-communications | Land      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 1,400   1,400
Non-communications | Construction in progress      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 20,570   13,738
Communications      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 322,534   315,254
Accumulated depreciation (84,067)   (73,897)
Property and equipment, net 238,467   241,357
Communications | Computer equipment and software      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 5,902   5,574
Communications | Computer equipment and software | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 1 year    
Communications | Computer equipment and software | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 5 years    
Communications | Transportation equipment      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 6,663   6,611
Communications | Transportation equipment | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 4 years    
Communications | Transportation equipment | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 10 years    
Communications | Land      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 70   70
Communications | Construction in progress      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross 1,088   54
Communications | Network plant and fiber      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 258,678   254,560
Communications | Network plant and fiber | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 4 years    
Communications | Network plant and fiber | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 15 years    
Communications | Customer located property      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 27,971   27,011
Communications | Customer located property | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 2 years    
Communications | Customer located property | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 4 years    
Communications | Central office      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 18,429   17,672
Communications | Central office | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 5 years    
Communications | Central office | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 15 years    
Communications | Other      
Property, Plant and Equipment [Line Items]      
Property and equipment, gross $ 3,733   $ 3,702
Communications | Other | Minimum      
Property, Plant and Equipment [Line Items]      
Useful life 1 year    
Communications | Other | Maximum      
Property, Plant and Equipment [Line Items]      
Useful life 39 years