FANNIE MAE COMMITMENTS AND PLEDGED SECURITIES - Agency Multifamily Mortgage Based Securities Pledged Securities (Detail) - Agency MBS - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Investments in Agency debt securities
Fair Value	$ 202,666	$ 183,432
Amortized Cost	200,469	182,912
Total gains for securities with net gains in AOCI	3,247	1,650
Total losses for securities with net losses in AOCI	(1,050)	(1,130)
Fair value of securities with unrealized losses	124,684	136,976
Maturities - Fair Value
After one year through five years	95,083
After five years through ten years	94,702
After ten years	12,881
Total	202,666	183,432
Maturities - Amortized Cost
After one year through five years	94,499
After five years through ten years	93,734
After ten years	12,236
Total	$ 200,469	$ 182,912