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REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | $ 9,633 | $ 8,980 | $ 18,219 | $ 18,164
Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 7,930 | 7,579 | 15,310 | 14,811
Not within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 1,703 | 1,401 | 2,909 | 3,353
Products and services transferred at a point in time | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 3,969 | 3,848 | 7,895 | 7,797
Products and services transferred over time | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 3,961 | 3,731 | 7,415 | 7,014
Non-interest Income | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 7,930 | 7,579 | 15,310 | 14,811
Trust management fees | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 3,745 | 3,498 | 6,987 | 6,589
Financial services fees | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 448 | 307 | 876 | 771
Interchange fees | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 1,895 | 1,928 | 3,865 | 3,938
Customer deposit fees | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | 1,587 | 1,590 | 3,089 | 3,019
Other customer service fees | Within the scope of ASC 606 |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total non-interest income | $ 255 | $ 256 | $ 493 | $ 494

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