Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Operating activities
Net income	$ 61,412	$ 49,946
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, amortization and accretion, net	3,287	2,504
Provision for credit losses	2,450	4,690
Deferred income tax expense	19,418	13,543
Income from accretion of discount associated with Loans at amortized cost, net	(13,409)	(12,605)
Income from merchant fees associated with Loans at fair value	(96,123)	(67,061)
Changes in fair value of loans	395,122	345,422
Change in bank partner fees carried at fair value	2,135	0
Amortization of debt issuance costs	8,088	5,289
Stock-based compensation costs	1,818	1,990
Changes in assets and liabilities:
Decrease in lease liability	(1,530)	(1,499)
Increase in uncollected fees on earning assets	(144,630)	(110,557)
Increase in income tax liability	(659)	(2,241)
Increase in accounts payable and accrued expenses	40,603	8,996
Other	(13,722)	(3,978)
Net cash provided by operating activities	264,260	234,439
Investing activities
Proceeds from recoveries on charged off receivables	32,221	23,449
Investments in earning assets	(1,549,730)	(1,238,058)
Proceeds from earning assets	1,001,912	949,988
Purchases and development of property	(4,822)	(131)
Net cash used in investing activities	(520,419)	(264,752)
Financing activities
Noncontrolling interests contributions	78	3
Noncontrolling interests distributions	0	(148)
Proceeds from issuance of common stock	11,589	0
Proceeds from issuance of Series B preferred stock, net of issuance costs	3,470	1,071
Preferred stock and preferred unit dividends	(7,831)	(12,500)
Proceeds from exercise of stock options	405	45
Purchase and retirement of outstanding stock and preferred units	(53,161)	(1,816)
Proceeds from issuance of Senior notes, net of issuance costs	25,282	54,559
Proceeds from borrowings	894,686	423,898
Repayment of borrowings	(634,760)	(411,289)
Net cash provided by financing activities	239,758	53,823
Net (decrease) increase in cash and cash equivalents and restricted cash and cash equivalents	(16,401)	23,510
Cash and cash equivalents and restricted cash equivalents at beginning of period	499,636	383,653
Cash and cash equivalents and restricted cash equivalents at end of period	483,235	407,163
Cash and cash equivalents, and restricted cash and cash equivalents at end of period
Unrestricted cash and cash equivalents	329,421	350,907
Restricted cash and cash equivalents	153,814	56,256
Cash and cash equivalents, and restricted cash and cash equivalents at end of period	483,235	407,163
Supplemental cash flow information
Cash paid for interest	90,300	65,181
Cash paid for income taxes, net of refunds	843	176
Accretion of discount associated with issuance of subsidiary equity	0	150
Decrease in accrued and unpaid preferred stock and preferred unit dividends	$ (2,035)	$ (50)