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Goodwill and Other Intangible Assets - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Goodwill [Line Items]          
Goodwill impairment $ 26,826 $ 0 $ 26,826 $ 0  
Goodwill 0   0   $ 26,826 [1]
Accumulated amortization of intangible assets 308 377 998 1,160  
Accumulated amortization of intangibles 7,424   7,424   6,325
Mortgage servicing asset 29,100   29,100   29,000
Loan Servicing Assets Included in Other Amortization Intangibles [Member]          
Goodwill [Line Items]          
Accumulated amortization of intangibles 1,200   1,200   $ 876
Loan Servicing Assets Included in Interest and Fees on Loans [Member]          
Goodwill [Line Items]          
Accumulated amortization of intangible assets     405    
Amortization of intangible assets included in interest and fees $ 96 $ 84 $ 101 $ 274  
Minimum [Member]          
Goodwill [Line Items]          
Amortization of intangible assets 5 years   5 years    
Maximum [Member]          
Goodwill [Line Items]          
Amortization of intangible assets 12 years   12 years    
[1] Derived from audited December 31, 2022 Consolidated Financial Statements.