Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2019

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consisted of the following:

	September 30, 2019		December 31, 2018
	(in thousands)
Prepaid expenses	$	12,305		$	5,581
Deposits	2,403			2,635
Other	2,190			1,157
Total prepaid expenses and other current assets	$	16,898		$	9,373

Schedule of Property and Equipment, Net

Property and equipment, net consisted of the following:

	September 30, 2019		December 31, 2018
	(in thousands)
Property and equipment:
Servers—network infrastructure	$	75,362	$	57,089
Buildings	13,035		13,035
Construction in progress	7,690		14,848
Capitalized internal-use software	27,966		16,344
Office and computer equipment	12,033		6,552
Office furniture	5,668		3,573
Software	990		847
Leasehold improvements	8,395		772
Asset retirement obligation	231		49
Gross property and equipment	151,370		113,109
Less accumulated depreciation and amortization	(58,885)		(39,899)
Total property and equipment, net	$	92,485	$	73,210

Schedule of Acquired Intangible Assets, Net

Acquired intangible assets, net consisted of the following:

	September 30, 2019
	Gross Carrying Amount		Accumulated Amortization		Net Book Value
	(in thousands)
Developed technology	$	250	$	188	$	62
Total acquired intangible assets, net	$	250	$	188	$	62

	December 31, 2018
	Gross Carrying Amount		Accumulated Amortization		Net Book Value
	(in thousands)
Developed technology	$	250	$	94	$	156
Total acquired intangible assets, net	$	250	$	94	$	156

Schedule of Estimated Future Amortization Expense of Acquired Intangible Assets

As of September 30, 2019, the estimated future amortization expense of acquired intangible assets was as follows:

	Estimated Amortization
	(in thousands)
Year ending December 31,
2019 (remaining three months)	$	31
2020	31
Total	$	62

Schedule of Accrued Expenses

Accrued expenses and other current liabilities consisted of the following:

	September 30, 2019		December 31, 2018
	(in thousands)
Accrued compensation and benefits	$	12,170	$	7,075
Accrued expenses	4,428		4,072
Customer refunds and credits	2,772		2,336
Accrued co-location and bandwidth	1,658		1,119
Income taxes payable	—		225
Other	2,093		872
Total accrued expenses and other current liabilities	$	23,121	$	15,699

Schedule of Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following:

	September 30, 2019		December 31, 2018
	(in thousands)
Accrued compensation and benefits	$	12,170	$	7,075
Accrued expenses	4,428		4,072
Customer refunds and credits	2,772		2,336
Accrued co-location and bandwidth	1,658		1,119
Income taxes payable	—		225
Other	2,093		872
Total accrued expenses and other current liabilities	$	23,121	$	15,699

Schedule of Other Noncurrent Liabilities

Other noncurrent liabilities consisted of the following:

	September 30, 2019		December 31, 2018
	(in thousands)
Indirect tax reserves	$	6,476	$	4,137
Deferred rent	2,367		1,659
Other	2,150		908
Total other noncurrent liabilities	$	10,993	$	6,704