v3.19.1

Property and equipment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Property and equipment
Total property and equipment	$ 617,614		$ 583,067
Less: accumulated depreciation and amortization	(287,880)		(268,888)
Total property and equipment, net	329,734		314,179
Depreciation and amortization expense
Total depreciation and amortization of property and equipment	19,009	$ 20,606
Network access
Depreciation and amortization expense
Total depreciation and amortization of property and equipment	11,582	13,587
Network operations
Depreciation and amortization expense
Total depreciation and amortization of property and equipment	4,386	4,256
Development and technology
Depreciation and amortization expense
Total depreciation and amortization of property and equipment	2,779	2,508
General and administrative
Depreciation and amortization expense
Total depreciation and amortization of property and equipment	262	$ 255
Leasehold improvements
Property and equipment
Total property and equipment	485,162		474,808
Software
Property and equipment
Total property and equipment	53,971		51,534
Construction in progress
Property and equipment
Total property and equipment	61,080		40,369
Computer equipment
Property and equipment
Total property and equipment	15,257		14,215
Furniture, fixtures and office equipment
Property and equipment
Total property and equipment	$ 2,144		$ 2,141

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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