v3.26.1
Note 13 - Subordinated Debentures (Details Textual) - Subordinated Debt [Member] - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
May 15, 2025
Jul. 03, 2023
Dec. 31, 2003
Mar. 31, 2026
Dec. 31, 2025
Dec. 19, 2003
The 2025 Notes [Member]            
Debt Instrument, Face Amount $ 200,000,000          
Debt Instrument, Interest Rate, Stated Percentage 8.125%          
Secured Overnight Financing Rate (SOFR) [Member] | The 2025 Notes [Member]            
Debt Instrument, Basis Spread on Variable Rate 4.415%          
Center Bancorp Statutory Trust II [Member]            
Debt Instrument, Face Amount       $ 5,000,000 $ 5,000,000 $ 5,000,000
Proceeds from Issuance of Debt     $ 5,200,000      
Debt Instrument, Interest Rate, Effective Percentage       6.78%    
Center Bancorp Statutory Trust II [Member] | LIBOR - London Interbank Offered Rate [Member]            
Debt Instrument, Basis Spread on Variable Rate     2.85%      
Center Bancorp Statutory Trust II [Member] | Tenor Spread Adjustment [Member]            
Debt Instrument, Basis Spread on Variable Rate   0.26161%   0.26161% 0.26161%  
Center Bancorp Statutory Trust II [Member] | Secured Overnight Financing Rate (SOFR) [Member]            
Debt Instrument, Basis Spread on Variable Rate       2.85% 2.85%