SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - PREMISES AND EQUIPMENT (Details) |
12 Months Ended |
|---|---|
Dec. 31, 2016 | |
| Buildings and improvements | Minimum | |
| Premises and equipment, net | |
| Estimated useful lives | 25 years |
| Buildings and improvements | Maximum | |
| Premises and equipment, net | |
| Estimated useful lives | 39 years |
| Furniture, fixtures and equipment | Minimum | |
| Premises and equipment, net | |
| Estimated useful lives | 3 years |
| Furniture, fixtures and equipment | Maximum | |
| Premises and equipment, net | |
| Estimated useful lives | 10 years |
| Leasehold improvements | Minimum | |
| Premises and equipment, net | |
| Estimated useful lives | 3 years |
| Leasehold improvements | Maximum | |
| Premises and equipment, net | |
| Estimated useful lives | 5 years |