Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Carrying value as of the balance sheet date of [accrued] interest payable on all forms of debt, including trade payables, that has been incurred and is unpaid. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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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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The portion of the carrying amount of short-term borrowings outstanding as of the balance sheet date which accrues interest at a set, unchanging rate.

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For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period.

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Short-Term Debt - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2019	Dec. 31, 2022	Jul. 01, 2022
Short-term Debt [Line Items]
Average balance of short-term debt	$ 1,020,000	$ 1,140,000
Accrued interest payable on short-term debt	5,000	5,000		$ 5,000
Convertible notes
Short-term Debt [Line Items]
Repurchased debt instrument	2,000	66,000
Gain on extinguishment of debt	$ 20	$ 200
Riverbend Funding, LLC \| Minimum
Short-term Debt [Line Items]
Fixed interest rate (as a percentage)					6.00%
Riverbend Funding, LLC \| Maximum
Short-term Debt [Line Items]
Fixed interest rate (as a percentage)					8.00%
Recourse Subordinate Securities Financing Receivable \| Redwood
Short-term Debt [Line Items]
Long-term debt, weighted average interest rate, over time			4.21%
Recourse Subordinate Securities Financing Receivable \| Redwood \| October 2022 through September 2023
Short-term Debt [Line Items]
Long-term debt, weighted average interest rate, over time			5.71%
Recourse Subordinate Securities Financing Receivable \| Redwood \| October 2023 through September 2024
Short-term Debt [Line Items]
Long-term debt, weighted average interest rate, over time			7.21%