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Subordinated Notes and Junior Subordinated Debentures - Additional Information (Details) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 15, 2023
Sep. 14, 2023
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2020
Debt Instrument [Line Items]          
Principal amount     $ 87,000 $ 87,000  
Adjustment spread Interest rate     0.26161%    
Accrued interest payable     $ 21,114 $ 22,233  
Three Month CME Secured Overnight Financing Rate Plus Tenor Spread Adjustment          
Debt Instrument [Line Items]          
Adjustment spread Interest rate     0.26161%    
Fixed-To-Floating Subordinate Notes Mature on July 1, 2030 | Subordinated Notes          
Debt Instrument [Line Items]          
Debt instrument, face amount         $ 75,000
Debt instrument, interest rate         6.00%
Debt instrument, maturity date     Jul. 01, 2030    
Debt instrument, redemption, description     As of December 31, 2024 and 2023, the liability outstanding relating to the subordinated notes, net of unamortized debt issuance costs, was $74.0 million and $73.9 million, respectively. The Company may, at its option, redeem the notes, in whole or in part, on a semi-annual basis beginning on July 1, 2025, subject to obtaining the prior approval of the FRB to the extent such approval is then required. As of December 31, 2024 and 2023, the liability outstanding relating to the subordinated notes, net of unamortized debt issuance costs, was $74.0 million and $73.9 million, respectively. The Company may, at its option, redeem the notes, in whole or in part, on a semi-annual basis beginning on July 1, 2025, subject to obtaining the prior approval of the FRB to the extent such approval is then required.  
Debt issuance costs         $ 1,700
Debt issuance costs, amortization period     10 years    
Unamortized debt issuance costs     $ 74,000 $ 73,900  
Fixed-To-Floating Subordinate Notes Mature on July 1, 2030 | Subordinated Notes | Three-Month Secured Overnight Financing Rate Plus 588 Basis Points          
Debt Instrument [Line Items]          
Debt instrument, description of variable rate basis     The subordinated notes bear a fixed interest rate of 6.00% until July 1, 2025 and a floating interest rate equal to a benchmark rate, which is expected to be three-month Secured Overnight Financing Rate plus 588 basis points thereafter until maturity.    
Metropolitan Statutory Trust 1          
Debt Instrument [Line Items]          
Principal amount     $ 35,000 $ 35,000  
Metropolitan Statutory Trust 1 | Junior Subordinated Debentures          
Debt Instrument [Line Items]          
Debt instrument, maturity date     Mar. 17, 2034    
Contractual rate     7.40% 8.43%  
Metropolitan Statutory Trust 1 | Junior Subordinated Debentures | Three Month CME Secured Overnight Financing Rate Plus Tenor Spread Adjustment          
Debt Instrument [Line Items]          
Adjustment spread Interest rate   0.26161%      
Interest rate spread     2.79%    
First Evanston Bancorp Trust I          
Debt Instrument [Line Items]          
Principal amount     $ 10,000 $ 10,000  
First Evanston Bancorp Trust I | Junior Subordinated Debentures          
Debt Instrument [Line Items]          
Debt instrument, maturity date     Mar. 15, 2035    
Contractual rate     6.40% 7.43%  
First Evanston Bancorp Trust I | Junior Subordinated Debentures | Three Month CME Secured Overnight Financing Rate Plus Tenor Spread Adjustment          
Debt Instrument [Line Items]          
Adjustment spread Interest rate 0.26161%        
Interest rate spread     1.78%