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INVESTMENT SECURITIES - Additional Information (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2022
USD ($)
Dec. 31, 2022
USD ($)
security
Dec. 31, 2021
USD ($)
security
Dec. 31, 2020
USD ($)
Debt Securities, Available-for-sale [Line Items]        
Amortized cost basis, transferred from the available-for-sale portfolio to the held-to-maturity portfolio $ 346,000,000      
Available-for-sale securities, accumulated gross unrealized loss, before tax $ 16,600,000      
Allowance for credit losses for debt securities   $ 0 $ 0  
Securities available-for-sale portfolio | security   77 119  
Securities in unrealized loss position | security   76 46  
Credit losses on available for sale securities   $ 0 $ 0 $ 0
Debt Securities        
Debt Securities, Available-for-sale [Line Items]        
Accrued interest receivable   9,200,000 4,700,000  
Collateral        
Debt Securities, Available-for-sale [Line Items]        
Securities available-for-sale, pledged   $ 356,500,000 $ 28,900,000