REVENUE FROM CONTRACTS WITH CUSTOMERS (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]
Noninterest income - out-of-scope of Topic 606	$ 4,107	$ 19,165	$ 15,591	$ 60,586
Total noninterest income	20,016	33,545	61,313	103,370
Trust management/administration fees
Disaggregation of Revenue [Line Items]
Revenue	6,975	6,159	19,854	18,280
Investment advisory and brokerage fees
Disaggregation of Revenue [Line Items]
Revenue	597	494	1,602	1,417
Other
Disaggregation of Revenue [Line Items]
Revenue	445	451	1,290	1,340
Nonsufficient fund fees
Disaggregation of Revenue [Line Items]
Revenue	2,235	2,058	6,206	5,716
Other
Disaggregation of Revenue [Line Items]
Revenue	1,364	1,353	4,049	3,932
Interchange revenues
Disaggregation of Revenue [Line Items]
Revenue	3,444	3,506	10,059	10,427
Merchant services revenue
Disaggregation of Revenue [Line Items]
Revenue	376	357	1,073	1,058
Other
Disaggregation of Revenue [Line Items]
Revenue	$ 473	$ 2	$ 1,589	$ 614

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