LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, Allowance	$ 338,084	$ 307,100
Provision for loan losses	16,519	25,523
Loans charged off	(15,384)	(18,457)
Recoveries of loans previously charged off	6,336	5,857
Ending balance, Allowance	345,555	320,023
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, Allowance	87,242	64,053
Provision for loan losses	3,388	12,147
Loans charged off	(11,859)	(15,295)
Recoveries of loans previously charged off	3,850	2,899
Ending balance, Allowance	82,621	63,804
Consumer
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, Allowance	7,327	3,952
Provision for loan losses	(537)	766
Loans charged off	(940)	(1,156)
Recoveries of loans previously charged off	295	377
Ending balance, Allowance	6,145	3,939
Mortgage warehouse
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, Allowance	2,262	1,678
Provision for loan losses	(438)	145
Loans charged off	0	0
Recoveries of loans previously charged off	0	0
Ending balance, Allowance	1,824	1,823
Municipal
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, Allowance	58	345
Provision for loan losses	(1)	(282)
Loans charged off	0	0
Recoveries of loans previously charged off	0	0
Ending balance, Allowance	57	63
Premium finance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, Allowance	736	602
Provision for loan losses	195	(431)
Loans charged off	(2,329)	(2,006)
Recoveries of loans previously charged off	2,080	2,451
Ending balance, Allowance	682	616
Real estate – construction and development
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, Allowance	60,421	61,017
Provision for loan losses	8,661	11,148
Loans charged off	0	0
Recoveries of loans previously charged off	4	3
Ending balance, Allowance	69,086	72,168
Real estate – commercial and farmland
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, Allowance	118,377	110,097
Provision for loan losses	(20)	474
Loans charged off	0	0
Recoveries of loans previously charged off	35	85
Ending balance, Allowance	118,392	110,656
Real estate – residential
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance, Allowance	61,661	65,356
Provision for loan losses	5,271	1,556
Loans charged off	(256)	0
Recoveries of loans previously charged off	72	42
Ending balance, Allowance	$ 66,748	$ 66,954

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount of increase in allowance for credit loss on financing receivable from recovery.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of credit loss expense (reversal of expense) for financing receivable.

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