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Revenue - Summary of primary component of Revenue, Level of Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Auction Marketplace Revenue [Member]
Disaggregation Of Revenue [Line Items]
Revenue	$ 40,006	$ 32,776	$ 120,863	$ 74,139
Transportation Data And Other Services Revenue [Member]
Disaggregation Of Revenue [Line Items]
Revenue	39,300	23,591	100,769	55,134
Marketplace And Service Revenue [Member]
Disaggregation Of Revenue [Line Items]
Revenue	$ 79,306	$ 56,367	$ 221,632	$ 129,273

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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, including 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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