LOANS AND ALLOWANCE - Changes in Allowance for Loan Losses by Loan Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 204,934	$ 223,277
Provision for credit losses	2,000	0
Recoveries on loans	900	844
Loans charged off	(3,153)	(1,069)
Ending balance	204,681	223,052
Commercial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	97,348	102,216
Provision for credit losses	3,145	(1,199)
Recoveries on loans	551	530
Loans charged off	(1,831)	(243)
Ending balance	99,213	101,304
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	44,048	46,839
Provision for credit losses	1,528	(583)
Recoveries on loans	53	56
Loans charged off	(351)	(4)
Ending balance	45,278	46,308
Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	24,823	28,955
Provision for credit losses	(4,454)	(384)
Recoveries on loans	0	0
Loans charged off	0	0
Ending balance	20,369	28,571
Consumer & Residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	38,715	45,267
Provision for credit losses	1,781	2,166
Recoveries on loans	296	258
Loans charged off	(971)	(822)
Ending balance	$ 39,821	$ 46,869