The aggregate amount of receivables to be collected from related parties where one party can exercise control or significant influence over another party; including affiliates, owners or officers and their immediate families, pension trusts, and so forth, at the financial statement date. which are usually due within one year (or one business cycle).

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Carrying amount as of the balance sheet date of obligations due all related parties.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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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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Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		8 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
USAA
Related Party Transactions
Due from related party	$ 0.2		$ 0.2	$ 0.2		$ 0.3
Due to related party	6.0		6.0	6.0		$ 5.3
USAA \| Sales and marketing
Related Party Transactions
Costs under related party agreements	6.3	$ 6.5		17.5	$ 16.3
Accu-Trade
Related Party Transactions
Due to related party	$ 0.4		$ 0.4	$ 0.4
Ownership percent	20.00%		20.00%	20.00%
Accu-Trade \| Contra-revenue
Related Party Transactions
Costs under related party agreements	$ 0.3		$ 0.8
Accu-Trade \| Cost of revenue
Related Party Transactions
Costs under related party agreements	$ 0.3		$ 0.7