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FANNIE MAE COMMITMENTS AND PLEDGED SECURITIES - Pledged Securities at Fair Value (Detail) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024	Dec. 31, 2023
Pledged securities
Pledged securities	$ 214,374	$ 206,904
Pledged Securities - Fannie Mae DUS Program
Pledged securities
Fair value of pledged securities in a continuous unrealized loss position for more than 12 months	76,300
Amortized cost of pledged securities in a continuous unrealized loss position for more than 12 months	77,400
Net unrealized loss of pledged securities in a continuous unrealized loss position for more than 12 months	1,100
Total pledged cash and cash equivalents
Pledged securities
Pledged securities	16,195	23,472	$ 42,994	$ 41,283
Restricted Cash - Pledged
Pledged securities
Pledged securities	1,155	3,015	2,602	2,727
Money Market Funds
Pledged securities
Pledged securities	15,040	20,457	40,392	38,556
Agency MBS
Pledged securities
Pledged securities	198,179	183,432	147,685	142,798
Asset Pledged as Collateral with Right \| Pledged Securities - Fannie Mae DUS Program
Pledged securities
Pledged securities	$ 214,374	$ 206,904	$ 190,679	$ 184,081