PREMISES AND EQUIPMENT - Schedule of premises and equipment (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
PREMISES AND EQUIPMENT
Premises and equipment, gross	$ 17,740	$ 17,811
Accumulated depreciation	(5,018)	(4,621)
Total	12,722	13,190
Building and building improvements
PREMISES AND EQUIPMENT
Premises and equipment, gross	10,323	9,976
Construction in progress
PREMISES AND EQUIPMENT
Premises and equipment, gross	4,108	4,604
Furniture, fixtures and equipment
PREMISES AND EQUIPMENT
Premises and equipment, gross	$ 3,309	$ 3,231