SUPPLEMENTAL STATEMENT OF CASH FLOWS INFORMATION - Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2022
Cash paid for:
Interest	$ 67,322	$ 37,798
Income tax	0	10,926
Operating cash flow from operating leases	4,362	4,316
Non-cash investing and financing activities:
Additions to OREO	1,213	6,414
Additions to auto and other repossessed assets	15,710	15,356
Capitalization of servicing assets	460	532
Loan securitizations	24,266	28,736
Loans held for investment transferred to held for sale	118	2,345
Loans held for sale transferred to held for investment	0	$ 1,008
Right-of-use asset obtained in exchange for operating lease liabilities, net of lease terminations	$ 3,926		$ 1,630