SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Premises and Equipment (Details)	Dec. 31, 2025
Building and building improvements | Minimum
PREMISES AND EQUIPMENT
Useful life	7 years
Building and building improvements | Maximum
PREMISES AND EQUIPMENT
Useful life	39 years
Furniture, fixtures and equipment | Minimum
PREMISES AND EQUIPMENT
Useful life	3 years
Furniture, fixtures and equipment | Maximum
PREMISES AND EQUIPMENT
Useful life	10 years