Property and Equipment, Net

3 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Property and equipment, net consists of the following:



	March 31, 2019			December 31, 2018
	(in thousands)
Land and land improvements	$	194,854		$	194,711
Buildings, building improvements, and leasehold improvements	413,678			412,089
Substation equipment	19,443			4,247
Data center equipment	928,549			904,722
Vehicles	1,825			1,685
Core network equipment	35,843			34,901
Cloud computing equipment	5,192			5,192
Fiber facilities	9,977			9,912
Computer equipment, furniture, and fixtures	36,245			34,975
Capitalized leased assets	34,341			33,730
Construction in progress	115,585			124,431
Property and equipment, gross	1,795,532			1,760,595
Less: accumulated depreciation and amortization	(486,018		)	(457,825		)
Property and equipment, net	$	1,309,514		$	1,302,770

Accumulated amortization for capitalized leased assets totaled $10.2 million and $9.9 million as of March 31, 2019 and December 31, 2018, respectively.

During the three months ended March 31, 2019 and 2018, capitalized interest was $1.3 million and $1.0 million, respectively.

The Company capitalized internal use software costs of $0.5 million and $0.7 million during the three months ended March 31, 2019 and 2018, respectively.

Total depreciation and amortization of property and equipment recognized on the consolidated statements of comprehensive income was as follows:



	Three Months Ended March 31,
	2019		2018
	(in thousands)
Cost of revenue	$	27,810	$	24,067
Selling, general and administrative expense	748		536
Total depreciation and amortization of property and equipment	$	28,558	$	24,603