CREDIT QUALITY ASSESSMENT - Information on the Credit Quality of Loan Portfolio (Details) - Non-accrual status - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	$ 91,485	$ 34,782
Loans placed on non-accrual	48,195	81,877
Non-accrual balances transferred to OREO	(3,265)	0
Non-accrual balances charged-off	(2,337)	(2,358)
Net payments or draws	(8,539)	(21,030)
Non-accrual loans brought current	(669)	(1,786)
Balance at end of period	124,870	91,485
Commercial real estate: | Commercial investor real estate
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	58,658	9,943
Loans placed on non-accrual	5,342	62,725
Non-accrual balances transferred to OREO	(3,265)	0
Non-accrual balances charged-off	(402)	0
Net payments or draws	(2,755)	(14,010)
Non-accrual loans brought current	0	0
Balance at end of period	57,578	58,658
Commercial real estate: | Commercial owner-occupied real estate
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	4,640	5,019
Loans placed on non-accrual	5,397	0
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	0	0
Net payments or draws	(398)	(379)
Non-accrual loans brought current	0	0
Balance at end of period	9,639	4,640
Commercial real estate: | Commercial AD&C
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	1,259	0
Loans placed on non-accrual	31,694	2,111
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	(134)	0
Net payments or draws	(1,003)	(852)
Non-accrual loans brought current	0	0
Balance at end of period	31,816	1,259
Commercial Business
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	10,051	7,322
Loans placed on non-accrual	3,087	6,271
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	(1,801)	(441)
Net payments or draws	(2,293)	(2,588)
Non-accrual loans brought current	0	(513)
Balance at end of period	9,044	10,051
Residential real estate: | Residential mortgage
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	12,332	7,439
Loans placed on non-accrual	1,496	7,871
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	0	(160)
Net payments or draws	(1,261)	(1,667)
Non-accrual loans brought current	(571)	(1,151)
Balance at end of period	11,996	12,332
Residential real estate: | Residential construction
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	443	0
Loans placed on non-accrual	0	449
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	0	0
Net payments or draws	96	(6)
Non-accrual loans brought current	0	0
Balance at end of period	539	443
Consumer
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at beginning of period	4,102	5,059
Loans placed on non-accrual	1,179	2,450
Non-accrual balances transferred to OREO	0	0
Non-accrual balances charged-off	0	(1,757)
Net payments or draws	(925)	(1,528)
Non-accrual loans brought current	(98)	(122)
Balance at end of period	$ 4,258	$ 4,102