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, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit losses, 2025			$ 6,956	$ 6,112
Credit losses, 2024			106,063	96,054
Credit losses, 2023			47,584	43,802
Credit losses, 2022			13,347	10,476
Credit losses, 2021			3,062	1,348
Credit losses, prior			523	439
Credit losses, Total Credit Losses	$ 55,298	$ 50,425	177,535	158,231
Large Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit losses, 2025			2,765	2,346
Credit losses, 2024			50,992	51,378
Credit losses, 2023			32,665	33,207
Credit losses, 2022			11,856	9,525
Credit losses, 2021			2,956	1,297
Credit losses, prior			493	408
Credit losses, Total Credit Losses	31,332	30,493	101,727	98,161
Small Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit losses, 2025			4,191	3,766
Credit losses, 2024			55,071	44,676
Credit losses, 2023			14,919	10,595
Credit losses, 2022			1,491	951
Credit losses, 2021			106	51
Credit losses, prior			30	31
Credit losses, Total Credit Losses	$ 23,966	$ 19,932	$ 75,808	$ 60,070

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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