v3.26.3
Note 14 - Subordinated Debentures - Summary of Mandatory Redeemable Trust Preferred Securities (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 9 Months Ended
Jul. 03, 2023
Dec. 31, 2003
Sep. 30, 2026
Dec. 19, 2003
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]     Secured Overnight Financing Rate (SOFR) [Member]  
Subordinated Debt [Member] | Center Bancorp Statutory Trust II [Member]        
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]   Secured Overnight Financing Rate (SOFR) [Member]    
Coupon rate   2.85%    
Securities issued     $ 5,000 $ 5
Liquidation value (in dollars per share)     $ 1,000  
Maturity     Jan. 23, 2034  
Redeemable by issuer beginning     Jan. 23, 2009  
Subordinated Debt [Member] | Center Bancorp Statutory Trust II [Member] | Tenor Spread Adjustment [Member]        
Coupon rate 0.26161%   0.2661%  
Subordinated Debt [Member] | Center Bancorp Statutory Trust II [Member] | Secured Overnight Financing Rate (SOFR) [Member]        
Coupon rate     2.85%