LOANS - Non-accrual loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Mar. 31, 2026
LOANS
Nonaccrual loans	$ 3,074	$ 2,521
Nonaccrual loans without related allowance for credit losses	2,673	1,994
Recognized interest income	6
Mortgage loans on real estate | One-to four-family first lien residential
LOANS
Nonaccrual loans	1,455	942
Nonaccrual loans without related allowance for credit losses	1,054	415
Mortgage loans on real estate | Commercial
LOANS
Nonaccrual loans		1,579
Nonaccrual loans without related allowance for credit losses		$ 1,579
Commercial and industrial
LOANS
Nonaccrual loans	41
Nonaccrual loans without related allowance for credit losses	$ 41