COMMITMENTS AND CONTINGENCIES - Off-Balance Sheet Financial Instruments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Financial instruments with contract amounts which represent potential credit risk:
Total	$ 4,245,500,000	$ 4,119,193,000
Commitments to sell residential mortgages	18,200,000	16,300,000
Commitments of lending operations	0	0
Real Estate
Financial instruments with contract amounts which represent potential credit risk:
Commitments of lending operations	1,000,000,000.0	600,000,000
Commercial and industrial loan commitments
Financial instruments with contract amounts which represent potential credit risk:
Total	1,841,169,000	1,717,924,000
Owner-occupied commercial loan commitments
Financial instruments with contract amounts which represent potential credit risk:
Total	54,162,000	57,013,000
Commercial mortgages loan commitments
Financial instruments with contract amounts which represent potential credit risk:
Total	132,276,000	136,379,000
Construction loan commitments
Financial instruments with contract amounts which represent potential credit risk:
Total	626,847,000	725,591,000
Commercial standby letters of credit
Financial instruments with contract amounts which represent potential credit risk:
Total	101,448,000	107,031,000
Residential loan commitments
Financial instruments with contract amounts which represent potential credit risk:
Total	12,751,000	11,797,000
Consumer loan commitments
Financial instruments with contract amounts which represent potential credit risk:
Total	$ 1,476,847,000	$ 1,363,458,000