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REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | $ 10,567 | $ 9,653 | $ 24,131 | $ 27,496
Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 8,214 | 7,917 | 23,507 | 23,227
Not within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 2,353 | 1,736 | 624 | 4,269
Products and services transferred at a point in time | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 4,478 | 4,199 | 12,100 | 12,095
Products and services transferred over time | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 3,736 | 3,718 | 11,407 | 11,132
Non-interest Income | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 8,214 | 7,917 | 23,507 | 23,227
Trust management fees | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 3,397 | 3,476 | 10,721 | 10,464
Financial services fees | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 506 | 653 | 1,361 | 1,528
Interchange fees | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 2,202 | 1,977 | 5,973 | 5,842
Customer deposit fees | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 1,751 | 1,521 | 4,598 | 4,610
Other customer service fees | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | $ 358 | $ 290 | $ 854 | $ 783

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