Finance Receivables - Additional Information (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) portfolio	Dec. 31, 2023 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Length of economic forecast	2 years
Length of mean reversion process	3 years
Number of portfolios | portfolio	2
Receivables past due and accruing interest	$ 65,730	$ 67,480
Retail
Accounts, Notes, Loans and Financing Receivable [Line Items]
Approved but unfunded retail loans	$ 140,700	223,200
Threshold period past due to be charged-off	120 days
Reversal of accrued interest against interest income	$ 33,000	27,500
Receivables past due and accruing interest	64,700	67,300
Wholesale
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unused lines of credit, wholesale	1,250,000	1,340,000
Reversal of accrued interest against interest income	200	0
Increase (decrease) In accrued interest, write-off		0
Financing receivables, 90 days or more past due, nonaccrual	$ 500	$ 0
Texas | Finance receivables | Geographic Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk (as a percent)	11.00%	11.00%
California | Finance receivables | Geographic Concentration Risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk (as a percent)		10.00%