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Merger and Acquisition - Additional Information (Detail)
$ / shares in Units, shares in Millions
Nov. 30, 2023
USD ($)
Location
Facility
$ / shares
shares
Mar. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Mar. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Business Acquisition [Line Items]          
Allowance for credit losses   $ 23,842,000 $ 23,767,000 $ 10,526,000 $ 4,666,000
Partners Bancorp [Member]          
Business Acquisition [Line Items]          
Merger completion date Nov. 30, 2023        
Percentage of merger 100.00%        
Business acquisition,share price | $ / shares $ 1.15        
Number of shares of common stock issued | shares 20.7        
Percentage of outstanding common shares post-merger 55.40%        
Total fair value consideration $ 135,779,000        
Fair value of discount amortized over estimated life of investments 921,000        
Loans acquired from Partners 1,300,000,000        
Fair value of acquistion loan $ 5,900,000        
Number of facility leases | Facility 11        
Number of locations | Location 13        
Fair value adjustment of long term borrowings $ 0        
Partners Bancorp [Member] | PCD Loan [Member]          
Business Acquisition [Line Items]          
Acquired percentage of loans 33.00%        
Loans acquired from Partners $ 431,600,000        
Contractual amounts receivable gross 431,600,000        
Estimated contractual amounts uncollectible 158,000        
Fair value of acquistion loan 408,600,000        
Partners Bancorp [Member] | Non PCD Loans [Member]          
Business Acquisition [Line Items]          
Allowance for credit losses 9,700,000        
Partners Bancorp [Member] | Common Stock [Member]          
Business Acquisition [Line Items]          
Fair value of common stock issued 133,800,000        
Partners Bancorp [Member] | Restricted Stock [Member]          
Business Acquisition [Line Items]          
Fair value of common stock issued $ 2,000,000