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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details)
$ in Millions
3 Months Ended
Mar. 31, 2023
USD ($)
qtr
Mar. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]      
Valuation period | qtr 7    
Forecasting revision period 1 year    
Commercial loans      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing receivable, reclassification, held for sale $ 0.0 $ 0.0  
Commercial and industrial      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Financing receivable, nonaccrual, medallion loans, fair value 0.5   $ 0.6
Financing receivable, nonaccrual, medallion loans, contractual balance $ 10.2   $ 10.9