Property and Equipment, Net - Components of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 2,346,594	$ 2,117,787
Less: accumulated depreciation and amortization	(671,365)	(566,670)
Property and equipment, net	1,675,229	1,551,117
Land and land improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	283,800	223,877
Buildings, building improvements, and leasehold improvements
Property, Plant and Equipment [Line Items]
Property and equipment, gross	518,266	435,214
Substation equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	19,780	19,780
Data center equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,196,670	1,021,056
Vehicles
Property, Plant and Equipment [Line Items]
Property and equipment, gross	1,945	1,732
Core network equipment
Property, Plant and Equipment [Line Items]
Property and equipment, gross	39,604	36,572
Fiber facilities
Property, Plant and Equipment [Line Items]
Property and equipment, gross	14,225	13,180
Computer equipment, furniture and fixtures
Property, Plant and Equipment [Line Items]
Property and equipment, gross	44,910	39,057
Finance lease right-of-use assets
Property, Plant and Equipment [Line Items]
Property and equipment, gross	72,951	72,569
Construction in progress
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 154,443	$ 254,750