LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) - USD ($) |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
|
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Interest income on nonaccrual loans | $ 0 | $ 0 | |
| Loans, net of unearned income | 21,041,497,000 | $ 20,739,906,000 | |
| Financing receivable, moody's baseline scenario was weighted percentage | 75.00% | ||
| Financing receivable, moody's upside scenario in weighted percentage | 25.00% | ||
| Unfunded Loan Commitments | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Modified loans | 2,000,000.0 | $ 179,000 | |
| 9 | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Loans, net of unearned income | 0 | 0 | |
| Loan Receivables | |||
| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||
| Accrued interest receivable | $ 75,500,000 | $ 77,300,000 | |