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SHORT-TERM BORROWINGS AND LONG-TERM DEBT - Subordinated Debentures (Details) - Junior Subordinated Debt - USD ($)
$ in Thousands
1 Months Ended 9 Months Ended 12 Months Ended
Dec. 31, 2004
Sep. 30, 2004
Sep. 30, 2023
Dec. 31, 2022
Debt Instrument [Line Items]        
Junior subordinated debentures outstanding     $ 51,547 $ 51,547
Trust IV        
Debt Instrument [Line Items]        
Junior subordinated debentures outstanding     $ 30,928 $ 30,928
Trust IV | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate        
Debt Instrument [Line Items]        
Basis spread on variable rate     0.26%  
Trust IV | Tenor Spread Adjustment        
Debt Instrument [Line Items]        
Basis spread on variable rate     2.45%  
Trust IV | London Interbank Offered Rate (LIBOR) 1        
Debt Instrument [Line Items]        
Basis spread on variable rate   2.45%   2.45%
Trust V        
Debt Instrument [Line Items]        
Junior subordinated debentures outstanding     $ 20,619 $ 20,619
Trust V | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate        
Debt Instrument [Line Items]        
Basis spread on variable rate     0.26%  
Trust V | Tenor Spread Adjustment        
Debt Instrument [Line Items]        
Basis spread on variable rate     1.87%  
Trust V | London Interbank Offered Rate (LIBOR) 1        
Debt Instrument [Line Items]        
Basis spread on variable rate 1.87%     1.87%