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Fair Value Measurements and Disclosure - Summary of Financial Assets Measured at Fair Value on NonRecurring Basis (Detail) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Other real estate owned $ 33 $ 0
Fair Value, Inputs, Level 3 [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Loans Receivable, Fair Value Disclosure 1,483,203 1,347,137
Fair Value, Nonrecurring [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Other real estate owned 33  
Assets, Fair Value Disclosure 4,518 30
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Other real estate owned 0  
Assets, Fair Value Disclosure 0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Other real estate owned 0  
Assets, Fair Value Disclosure 0
Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Other real estate owned 33  
Assets, Fair Value Disclosure 4,518 30
Impaired Loans [Member] | Fair Value, Nonrecurring [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Loans Receivable, Fair Value Disclosure   30
Impaired Loans [Member] | Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Loans Receivable, Fair Value Disclosure  
Impaired Loans [Member] | Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Loans Receivable, Fair Value Disclosure  
Impaired Loans [Member] | Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Loans Receivable, Fair Value Disclosure   $ 30
Collateral dependent loan [Member] | Fair Value, Nonrecurring [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Loans Receivable, Fair Value Disclosure 4,485  
Collateral dependent loan [Member] | Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Loans Receivable, Fair Value Disclosure 0  
Collateral dependent loan [Member] | Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 2 [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Loans Receivable, Fair Value Disclosure 0  
Collateral dependent loan [Member] | Fair Value, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Assets Measured On Nonrecurring Basis [Line Items]    
Loans Receivable, Fair Value Disclosure $ 4,485