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DERIVATIVES - Additional Information (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Derivative [Line Items]
Net interest income (expense)	$ 34,375,000	$ 43,978,000
Accrued interest receivable	32,672,000		$ 30,676,000
Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional amount	310,000,000		310,000,000
Unrealized gain	9,686,000		6,814,000
Net interest income (expense)	1,500,000	$ 947,000
Interest Rate Swap [Member] \| Designated as Hedging Instrument [Member] \| Other Assets [Member]
Derivative [Line Items]
Notional amount	310,000,000		310,000,000
Loan Level Swaps [Member] \| Not Designated as Hedging Instrument [Member]
Derivative [Line Items]
Notional amount	520,222,000		545,983,000
Loan Level Swaps [Member] \| Not Designated as Hedging Instrument [Member] \| Other Assets [Member]
Derivative [Line Items]
Accrued interest receivable	1,300,000		1,300,000
Loan Level Swaps [Member] \| Not Designated as Hedging Instrument [Member] \| Other Liabilities [Member]
Derivative [Line Items]
Accrued interest payable	$ 1,400,000		$ 1,400,000