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SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)
$ in Thousands
 3 Months Ended
Apr. 01, 2024
USD ($)
shares
Jan. 01, 2024
USD ($)
Mar. 31, 2024
USD ($)
segment
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Total assets     $ 11,887,458   $ 12,283,415
Number of operating segments | segment     3    
Number of reportable segments | segment     3    
Retained earnings decrease     $ (248,412)   $ (237,197)
Decrease in other assets     1,613 $ (2,119)  
Decrease in other liabilities     10,055 2,000  
Increase in deferred tax assets     $ 0 $ 1,617  
Merchants And Manufacturers Bank Corporation | Subsequent Event          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Business combination consideration, number of shares (in shares) | shares 1,429,304        
Payments to acquire business $ 12,200        
Accounting Standards Update 2023-02          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]          
Retained earnings decrease   $ 1,400      
Decrease in other assets   2,400      
Decrease in other liabilities   500      
Increase in deferred tax assets   $ 500