Consolidated Income Statements - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenues:
Financing Receivable, Allowance For Credit Losses, Recoveries Reclassified To Income	$ 250,934	$ 209,290	$ 491,892	$ 411,346
Financing Receivable, Allowance For Credit Loss, Changes In Estimated Recoveries	33,292	73,320	61,214	124,994
Financing Receivable, Allowance For Credit Loss, Portfolio Revenue	284,226	282,610	553,106	536,340
Revenue From Contract With Customer And Fee Revenue, Excluding Assessed Tax	3,462	1,619	4,201	3,475
Revenues, Total	287,688	284,229	557,307	539,815
Operating Expenses [Abstract]
Labor and Related Expense	75,724	74,241	149,047	147,838
Legal Fees	15,625	13,762	30,855	25,874
Legal Costs	37,583	35,274	70,977	61,965
Agency Fees	22,688	21,008	44,056	40,731
Outside Fees And Services Expenses	21,071	18,124	42,174	43,174
Communication	9,417	11,577	19,894	24,155
Rent And Occupancy	3,504	4,136	6,984	8,280
Depreciation, amortization and impairment	2,503	2,637	6,272	5,357
Other Cost and Expense, Operating	14,462	14,248	27,360	26,823
Operating Expenses, Total	202,577	195,007	397,619	384,197
Operating Income (Loss), Total	85,111	89,222	159,688	155,618
Nonoperating Income (Expense) [Abstract]
Interest Income (Expense), Nonoperating	(62,361)	(55,353)	(123,331)	(107,631)
Gain on sale of equity method investment	38,403	0	38,403	0
Gain (Loss), Foreign Currency Transaction, before Tax	50	(99)	(1)	128
Other Nonoperating Income (Expense)	(75)	46	(255)	(160)
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest, Total	61,128	33,816	74,504	47,955
Income Tax Expense (Benefit)	15,415	8,702	19,727	11,088
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total	45,713	25,114	54,777	36,867
Net Income (Loss) Attributable to Noncontrolling Interest	3,339	3,598	8,744	11,876
Net Income (Loss) Attributable to Parent, Total	$ 42,374	$ 21,516	$ 46,033	$ 24,991
Earnings Per Share [Abstract]
Basic (in dollars per share)	$ 1.08	$ 0.55	$ 1.17	$ 0.64
Diluted (in dollars per share)	$ 1.08	$ 0.54	$ 1.16	$ 0.63
Weighted Average Number of Shares Outstanding, Diluted [Abstract]
Basic (shares)	39,323	39,364	39,436	39,319
Diluted (shares)	39,385	39,546	39,536	39,497