BORROWINGS - Narrative (Details)		3 Months Ended		6 Months Ended
	Jan. 02, 2026 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($) fund	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($)
BORROWINGS
Payments of FHLBank Borrowings, Financing Activities	$ 50,000,000			$ 204,003,000	$ 67,603,000
Number of unsecured federal funds lines of credit | fund				2
Interest expenses		$ 700,000	$ 600,000	$ 1,300,000	$ 1,300,000
Subordinated Notes
BORROWINGS
Carrying Value						$ 8,000,000.0
PPPLF
BORROWINGS
Interest bearing rate (as a percent)		35.00%		35.00%
Carrying Value		$ 0.0		$ 0.0		500,000
PPPLF | Minimum
BORROWINGS
Debt term (in years)				2 years
PPPLF | Maximum
BORROWINGS
Debt term (in years)				5 years
Federal Funds Lines of Credit One
BORROWINGS
Maximum borrowing capacity		10,000,000.0		$ 10,000,000.0
Amount outstanding		0		0		0
Federal Funds Lines of Credit Two
BORROWINGS
Maximum borrowing capacity		19,000,000.0		19,000,000.0
FHLB Advance
BORROWINGS
Debt term (in years)	3 months
Basis spread on variable rate	0.14%
FHLB
BORROWINGS
Amount of collateral pledged		1,460,000,000		1,460,000,000		$ 1,450,000,000
Borrowings from FHLB		$ 576,000,000		$ 576,000,000