LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025	Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 6,434,020,000		$ 6,493,740,000
Provision for credit loss expense	998,000	$ 1,556,000
Provision for (benefit from) unfunded commitments	114,000	117,000
Financing receivable, excluding accrued interest, modified, subsequent default	0	$ 0
Syndicated Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	78,341,000		70,798,000
Unfunded Loan Commitment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable excluding accrued interest modified accumulated	0
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	814,246,000		778,978,000
Commercial and Industrial | Syndicated Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 78,300,000		$ 70,800,000