ALLOWANCE FOR RISK-SHARING OBLIGATIONS AND GUARANTY OBLIGATION - Schedule of Activity Related to Guaranty Obligation (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
ALLOWANCE FOR RISK-SHARING OBLIGATIONS AND GUARANTY OBLIGATION
Guaranty obligation, net of accumulated amortization - beginning balance	$ 35,980	$ 39,868
Additions, following the sale of loan	5,679	4,218
Amortization and write-offs	(8,735)	(8,106)
Guaranty obligation, net of accumulated amortization - ending balance	$ 32,924	$ 35,980