SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Property, Plant and Equipment (Details)	Jun. 30, 2023
Minimum | Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment, estimated useful life	10 years
Minimum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, estimated useful life	3 years
Maximum | Buildings
Property, Plant and Equipment [Line Items]
Premises and equipment, estimated useful life	39 years
Maximum | Furniture and equipment
Property, Plant and Equipment [Line Items]
Premises and equipment, estimated useful life	7 years