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Organization and Basis of Presentation - Additional Information (Detail)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Mar. 27, 2025
USD ($)
Sep. 30, 2025
USD ($)
$ / shares
shares
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Aug. 25, 2025
USD ($)
Organization And Basis Of Presentation [Line Items]          
Amount of common stock authorized to be repurchased         $ 15,000
Shares repurchased | shares   659,949 659,949    
Shares repurchased, weighted average price | $ / shares   $ 4.16      
Shares repurchased, value   $ 2,800 $ 2,800    
Loss on sale of Monarch Mortgage     $ 532 $ 1,469  
Leverage ratio   0.10 0.10    
Capital ratio   0.13 0.13    
Monarch Mortgage [Member] | Other Noninterest Income [Member]          
Organization And Basis Of Presentation [Line Items]          
Loss on sale of Monarch Mortgage $ (200)