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Loans - Schedule of Impairment by Class of Loans (Detail)
$ in Thousands
Dec. 31, 2022
USD ($)
Financing Receivable, Impaired [Line Items]  
Unpaid Principal Balance $ 1,101
Recorded Investment with no Allowance 387
Recorded Investment with Allowance 659
Total recorded investment 1,046
Related Allowance 4
Commercial [Member]  
Financing Receivable, Impaired [Line Items]  
Unpaid Principal Balance 123
Recorded Investment with no Allowance 124
Total recorded investment 124
Commercial Real Estate [Member]  
Financing Receivable, Impaired [Line Items]  
Unpaid Principal Balance 117
Recorded Investment with no Allowance 92
Recorded Investment with Allowance 20
Total recorded investment 112
Residential Real Estate [Member]  
Financing Receivable, Impaired [Line Items]  
Unpaid Principal Balance 733
Recorded Investment with no Allowance 166
Recorded Investment with Allowance 518
Total recorded investment 683
Consumer [Member]  
Financing Receivable, Impaired [Line Items]  
Unpaid Principal Balance 127
Recorded Investment with no Allowance 6
Recorded Investment with Allowance 121
Total recorded investment 127
Related Allowance $ 4