LOANS AND LEASES - Financial Difficulty Modifications (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 6,176
Finance Receivable Percentage Of Class Of Loans And Leases			0.0006
Derivative liabilities	$ 304,302		$ 304,302	$ 357,698
Foreign Exchange | Fair Value, Measurements, Recurring
Accounts, Notes, Loans and Financing Receivable [Line Items]
Derivative liabilities	151,844		151,844	204,882
Foreign Exchange | Fair Value Measurements Using Level 1 | Fair Value, Measurements, Recurring
Accounts, Notes, Loans and Financing Receivable [Line Items]
Derivative liabilities	0		0	0
Foreign Exchange | Fair Value Measurements Using Level 2 | Fair Value, Measurements, Recurring
Accounts, Notes, Loans and Financing Receivable [Line Items]
Derivative liabilities	151,844		151,844	204,882
Foreign Exchange | Fair Value Measurements Using Level 3 | Fair Value, Measurements, Recurring
Accounts, Notes, Loans and Financing Receivable [Line Items]
Derivative liabilities	0		0	$ 0
Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			0
Financing Receivable, Troubled Debt Restructuring, Increase (Decrease) from Modification			0
Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 1,028
Extended Maturity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 5,076
Financing Receivable Restructured Loans Not Considered TDRs Weighted Average Term Extension			11.2 years
Contractual Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 0
Financing Receivable Restructured Loans Not Considered TDRs Weighted Average Interest Rate Reduction	1.65%		1.65%
Term Extension and Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 72
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 1,187
Finance Receivable Percentage Of Class Of Loans And Leases			0.0010
Residential Portfolio Segment [Member] | Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 0
Financing Receivable, Troubled Debt Restructuring, Increase (Decrease) from Modification			0
Residential Portfolio Segment [Member] | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			1,028
Residential Portfolio Segment [Member] | Extended Maturity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 102
Financing Receivable Restructured Loans Not Considered TDRs Weighted Average Term Extension			8.3 years
Residential Portfolio Segment [Member] | Contractual Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 0
Financing Receivable Restructured Loans Not Considered TDRs Weighted Average Interest Rate Reduction	2.00%		2.00%
Residential Portfolio Segment [Member] | Term Extension and Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 57
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 184
Finance Receivable Percentage Of Class Of Loans And Leases			0.0003
Home equity | Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 0
Financing Receivable, Troubled Debt Restructuring, Increase (Decrease) from Modification			0
Home equity | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			0
Home equity | Extended Maturity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 169
Financing Receivable Restructured Loans Not Considered TDRs Weighted Average Term Extension			22.6 years
Home equity | Contractual Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 0
Financing Receivable Restructured Loans Not Considered TDRs Weighted Average Interest Rate Reduction	0.31%		0.31%
Home equity | Term Extension and Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 15
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 4,805
Finance Receivable Percentage Of Class Of Loans And Leases			0.0014
Commercial | Principal Forgiveness
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 0
Commercial | Payment Delay
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			0
Commercial | Extended Maturity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			4,805
Commercial | Contractual Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			0
Commercial | Term Extension and Interest Rate Reduction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring, Postmodification			$ 0