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Disaggregation of Revenue - Summary of Disaggregation of Revenue by Transaction Model (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 157,353	$ 123,616	$ 330,941	$ 243,061
Open platform transactions
Disaggregation of Revenue [Line Items]
Revenue	152,522	120,962	321,870	237,984
Private platform transactions
Disaggregation of Revenue [Line Items]
Revenue	$ 4,831	$ 2,654	$ 9,071	$ 5,077

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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.

+ References

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