Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Principles of Consolidation and Recent Events (Details)

v3.23.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Principles of Consolidation and Recent Events (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2023
USD ($)
Branch
Dec. 31, 2022
USD ($)
Principles Of Consolidation [Abstract]    
Number of full service branch offices | Branch 26  
Recent Events [Abstract]    
Federal funds sold and overnight balances $ 391,336 $ 703,955
Borrowing capacity 951,000  
Federal Reserve Bank [Member]    
Recent Events [Abstract]    
Advances under new borrowing facility 0 0
Unused borrowing capacity $ 1,500 $ 5,500
Federal Reserve Bank [Member] | Bank Term Funding Program [Member]    
Recent Events [Abstract]    
Debt instrument, term 1 year  
Amount of prepayment penalty $ 0  
Advances under new borrowing facility 0  
Unused borrowing capacity $ 642,200  
Expiration date Mar. 11, 2024  
Borrowing capacity $ 642,200  
Federal Reserve Bank [Member] | Fed Funds Facilities with Correspondent Banks [Member]    
Recent Events [Abstract]    
Borrowing capacity 65,000  
Federal Reserve Bank [Member] | Discount Window [Member]    
Recent Events [Abstract]    
Borrowing capacity 1,500  
Federal Home Loan Bank ("FHLB") [Member]    
Recent Events [Abstract]    
Borrowing capacity $ 242,300