Leases (Tables)

12 Months Ended

Dec. 31, 2020

Lessee Disclosure [Abstract]

Summary of Operating Lease Asstes and Liabilites

The table below presents the operating lease-related assets and liabilities (in thousands):

	Year Ended December 31,
	2019			2020			Balance Sheet Classification
Operating lease right-of-use assets	$	14,895		$	84,336		Operating lease right-of-use assets
Current operating lease liabilities	$	2,510		$	22,206		Operating lease liabilities
Non-current operating lease liabilities	$	12,745		$	71,755		Operating lease liabilities, non-current
Weighted-average remaining term (years)		5.0			3.7
Weighted-average discount rate		6.0	%		4.7	%

Summary of Lease, Cost

The table below presents certain information related to the lease costs for operating leases which are allocated to cost of revenue, sales and marketing, research and development, and general and administrative expenses (in thousands):

	Year Ended December 31,
	2018		2019		2020
Operating lease cost	$	2,784	$	3,520	$	17,372
Short-term lease cost		3,559		3,231		8,196
Variable lease cost		276		479		2,147
Total lease cost	$	6,619	$	7,230	$	27,715

Summary of Finance Lease Asstes and Liabilites

The table below presents the finance lease-related assets and liabilities (in thousands):

	Year Ended December 31,
	2019			2020			Balance Sheet Classification
Finance lease right-of-use assets	$	2,343		$	5,067		Property and equipment, net
Current finance lease liabilities	$	1,387		$	2,821		Accrued liabilities
Non-current finance lease liabilities	$	940		$	2,340		Other non-current liabilities
Weighted-average remaining term (years)		0.49			0.61
Weighted-average discount rate		6.0	%		6.0	%

Summary of operating sublease

or the year ended December 31, 2020, we have the following operating sublease information (in thousands):

	Year Ended December 31, 2020
Fixed sublease expense	$	5,769
Variable sublease expense		836
Sublease income		(5,678	)
Variable sublease income		(836	)
Net Loss	$	91

Summary of Lease Liability Maturity

Undiscounted cash flow—The tables below reconcile the undiscounted cash flows for each of the first five years and total of the remaining years to the operating and finance lease liabilities recorded in the consolidated balance sheets under ASC 842 (in thousands):

	As of December 31, 2020
	Operating Leases		Networking Equipment Finance Leases		Total
2021	$	26,123	$	3,581	$	29,704
2022		17,874		2,015		19,889
2023		12,279		596		12,875
2024		12,288		—		12,288
2025		12,601		—		12,601
Thereafter		29,783		—		29,783
Total lease payments		110,948		6,192		117,140
Less: amount representing interest		16,987		1,031		18,018
Present value of future lease payments		93,961		5,161		99,122
Less: current obligations under leases		22,206		2,821		25,027
Non-current lease obligations	$	71,755	$	2,340	$	74,095