SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Summary of the Estimated Useful Life of the Different Fixed Asset Classes (Details) - Maximum	Dec. 31, 2023
Bank Buildings
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Equipment
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Furniture and Fixtures
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Software
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Automobiles
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	4 years