CURRENT EXPECTED CREDIT LOSSES - Narrative (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, allowance for credit loss, excluding accrued interest	$ 32,400
Allowance for credit loss, basis points	11100.00%
Commitments	$ 2,910,504		$ 2,662,853
Other Assets
Financing Receivable, Allowance for Credit Loss [Line Items]
Interest receivable	12,400		17,100
Loans Held for Investment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, allowance for credit loss, excluding accrued interest	27,613	$ 20,452	23,939
Unfunded Loan Commitment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, allowance for credit loss, excluding accrued interest	$ 4,808	$ 4,201	$ 1,308