Note 4 - SECURITIZATIONS AND VARIABLE INTEREST ENTITIES - VIE (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Securitizations and Variable Interest Entities
Total assets	$ 8,599,549	$ 8,538,894	$ 8,036,904
Liabilities	7,692,207	7,652,298
VIE
Securitizations and Variable Interest Entities
Total assets	22,300	22,400
Liabilities	0	$ 0
Maximum exposure to loss	$ 31,800