Note 8 - Variable Interest Entities - Summary of Variable Interest Entities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
Unrestricted cash and cash equivalents	$ 425,023	$ 375,416
Restricted cash and cash equivalents	100,914	124,220	$ 76,058
Loans, interest and fees receivable, at fair value	6,350,009	2,630,274
Total Assets held by VIEs	7,079,732	3,270,707	$ 3,039,964
Notes Payable, net held by VIEs	5,332,680	2,199,448
Variable Interest Entity, Primary Beneficiary [Member]
Unrestricted cash and cash equivalents	170,500	140,200
Restricted cash and cash equivalents	73,600	98,800
Loans, interest and fees receivable, at fair value	6,200,600	2,542,900
Total Assets held by VIEs	6,444,700	2,781,900
Notes Payable, net held by VIEs	$ 5,297,800	$ 2,128,000

Amount of asset recognized for present right to economic benefit.

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