Revenues - Revenues By Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 195,019	$ 147,162
United States
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	160,386	117,463
Other countries
Disaggregation of Revenue [Line Items]
Revenue from contract with customers	$ 34,633	$ 29,699
Revenue from Contract with Customer \| Geographic Concentration Risk
Disaggregation of Revenue [Line Items]
Concentration risk (as a percentage)	100.00%	100.00%
Revenue from Contract with Customer \| Geographic Concentration Risk \| United States
Disaggregation of Revenue [Line Items]
Concentration risk (as a percentage)	82.00%	80.00%
Revenue from Contract with Customer \| Geographic Concentration Risk \| Other countries
Disaggregation of Revenue [Line Items]
Concentration risk (as a percentage)	18.00%	20.00%

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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-Section 50
-Paragraph 30
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details