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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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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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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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The carrying value as of the balance sheet date of the current portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Debt Instruments - Floor Plan Facility (Details) - USD ($)	1 Months Ended	10 Months Ended
	Nov. 30, 2018	Oct. 31, 2018	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018	Dec. 31, 2017
Line of Credit Facility [Line Items]
Line of credit, outstanding			$ 39,697,000	$ 196,963,000
Restricted cash			2,196,000	$ 9,848,000	$ 18,356,000	$ 14,443,000
Floor Plan Facility \| Line of Credit
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 650,000,000.0	$ 350,000,000.0	$ 650,000,000.0
Deposit required under floor plan facility, percentage of principal balance	5.00%		5.00%	5.00%
Term of principal payments	5 days
Principal repayment, term threshold after sale of used vehicle	15 days
Principal repayment, term threshold after sale of related finance receivable	2 days
Outstanding balance, days held in inventory threshold	180 days
Outstanding balance, held in inventory, percentage of original principal amount due	10.00%
Outstanding balance, held in inventory, original principal amount, threshold	50.00%
Outstanding balance, held in inventory, wholesale value, threshold	50.00%
Interest rate			5.80%	5.90%
Line of credit, outstanding			$ 23,800,000	$ 197,000,000.0
Line of credit facility, remaining borrowing capacity			626,200,000
Restricted cash			$ 1,200,000	$ 9,800,000
Floor Plan Facility \| Line of Credit \| LIBOR
Line of Credit Facility [Line Items]
Debt instrument, basis spread on variable rate	3.40%	3.65%
Floor Plan Facility \| MPSA or Finance Receivable Facilities \| Line of Credit
Line of Credit Facility [Line Items]
Principal repayment, term threshold after sale of used vehicle	15 days
Principal repayment, term threshold after sale of related finance receivable	1 day