Finance Receivables, Credit Quality Information, and Allowance for Credit Losses - Summary of Credit Losses by Product and Origination Year (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit losses, 2026			$ 6,822	$ 6,956
Credit losses, 2025			131,741	106,063
Credit losses, 2024			48,656	47,584
Credit losses, 2023			13,575	13,347
Credit losses, 2022			4,440	3,062
Credit losses, prior			943	523
Credit losses, Total Credit Losses	$ 64,754	$ 55,298	206,177	177,535
Large Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit losses, 2026			3,268	2,765
Credit losses, 2025			73,566	50,992
Credit losses, 2024			32,056	32,665
Credit losses, 2023			11,679	11,856
Credit losses, 2022			4,286	2,956
Credit losses, prior			934	493
Credit losses, Total Credit Losses	40,576	31,332	125,789	101,727
Small Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit losses, 2026			3,554	4,191
Credit losses, 2025			58,175	55,071
Credit losses, 2024			16,600	14,919
Credit losses, 2023			1,896	1,491
Credit losses, 2022			154	106
Credit losses, prior			9	30
Credit losses, Total Credit Losses	$ 24,178	$ 23,966	$ 80,388	$ 75,808

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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