BORROWINGS - Schedule of borrowings (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
BORROWINGS
Borrowings from FHLB	$ 256,065	$ 141,498
October 1, 2023
BORROWINGS
Interest rate (as a percent)	5.49%
Borrowings from FHLB	$ 175,068	131,498
May 5, 2023
BORROWINGS
Interest rate (as a percent)	0.76%
Borrowings from FHLB	$ 0	10,000
March 27, 2024
BORROWINGS
Borrowings from FHLB	$ 31,000
Rate %	4.78%
Borrowings from federal reserve bank	$ 30,997	0
November 30, 2023
BORROWINGS
Rate %	5.50%
Borrowings from federal reserve bank	$ 50,000	$ 0