Finance Receivables, net (Portfolio Acquisitions) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Face value	$ 1,677,937	$ 2,067,538
Noncredit discount	(204,693)	(284,273)
Allowance for credit losses at acquisition	(1,252,394)	(1,491,563)
Purchase price	220,850	291,702
Core
Accounts, Notes, Loans and Financing Receivable [Line Items]
Face value	1,587,851	1,966,064
Noncredit discount	(194,229)	(274,200)
Allowance for credit losses at acquisition	(1,190,672)	(1,417,971)
Purchase price	202,950	273,893
Insolvency
Accounts, Notes, Loans and Financing Receivable [Line Items]
Face value	90,086	101,474
Noncredit discount	(10,464)	(10,073)
Allowance for credit losses at acquisition	(61,722)	(73,592)
Purchase price	$ 17,900	$ 17,809