DERIVATIVE FINANCIAL INSTRUMENTS - Summary of Components of Interest Rate Swaps (Details) - Derivatives |
9 Months Ended | 12 Months Ended |
|---|---|---|
Sep. 30, 2026 |
Dec. 31, 2025 |
|
| Interest rate swaps - commercial loans | ||
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | ||
| Weighted Average Pay Rate | 3.75% | |
| Weighted Average Receive Rate | 3.92% | |
| Weighted Average Maturity in Years | 1 year 8 months 12 days | |
| Interest rate swaps - FHLB advances and brokered deposits | ||
| Derivative Instruments and Hedging Activities Disclosures [Line Items] | ||
| Weighted Average Pay Rate | 3.35% | |
| Weighted Average Receive Rate | 3.93% | |
| Weighted Average Maturity in Years | 2 years 6 months |