Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($) segment	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Concentration Risk [Line Items]
Goodwill	$ 32,170	$ 2,674	$ 2,674
IP addresses	$ 39,906	34,270
Useful life	5 years
Intangible assets, net	$ 3,009	379
Deferred revenue	4,826	4,873
Revenue recognized during period	2,672	2,440	1,936
Advertising expense	$ 14,577	$ 6,331	$ 8,426
Number of operating segments \| segment	1
Number of reportable segments \| segment	1
Developed technology
Concentration Risk [Line Items]
Useful life	3 years
Geographic Concentration Risk \| Revenue from Contract with Customer
Concentration Risk [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%
U.S. \| Geographic Concentration Risk \| Revenue from Contract with Customer
Concentration Risk [Line Items]
Concentration risk, percentage	31.00%	31.00%	32.00%
U.S. \| Geographic Concentration Risk \| Property and Equipment
Concentration Risk [Line Items]
Concentration risk, percentage	50.00%	48.00%
Minimum
Concentration Risk [Line Items]
Interest rate	0.10%
Maximum
Concentration Risk [Line Items]
Interest rate	0.22%
Certificates of Deposit
Concentration Risk [Line Items]
Payments to acquire cash equivalents	$ 620,000

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