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LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Total Loans Rated Special Mention or Lower (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Allowance for loan losses |  |
Financing receivable, before allowance for credit loss | $ 8,335,309 | $ 6,825,847
Total Criticized | Performing |  |
Allowance for loan losses |  |
Financing receivable, before allowance for credit loss | 187,906 | 241,957
Total Classified | Performing |  |
Allowance for loan losses |  |
Financing receivable, before allowance for credit loss | 119,779 | 141,886
Non-Accrual | Performing |  |
Allowance for loan losses |  |
Financing receivable, before allowance for credit loss | 31,114 | 35,326
Substandard Accruing | Performing |  |
Allowance for loan losses |  |
Financing receivable, before allowance for credit loss | 88,665 | 106,560
Special Mention | Performing |  |
Allowance for loan losses |  |
Financing receivable, before allowance for credit loss | $ 68,127 | $ 100,071

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