v3.26.1
Borrowings - Schedule of Federal Home Loan Bank Advances by Branch of FHLB Bank (Detail) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Federal Home Loan Bank, Advance, Branch of FHLBank [Line Items]    
Principal Amounts $ 44,844 $ 52,308
Federal Home Loan Bank Advances One [Member]    
Federal Home Loan Bank, Advance, Branch of FHLBank [Line Items]    
Principal Amounts $ 42,060 $ 50,000
Maturity Dates 2026 2026
Federal Home Loan Bank Advances One [Member] | Minimum [Member]    
Federal Home Loan Bank, Advance, Branch of FHLBank [Line Items]    
Interest Rates 3.92% 4.38%
Federal Home Loan Bank Advances One [Member] | Maximum [Member]    
Federal Home Loan Bank, Advance, Branch of FHLBank [Line Items]    
Interest Rates 4.38% 4.75%
Federal Home Loan Bank Advances Two [Member]    
Federal Home Loan Bank, Advance, Branch of FHLBank [Line Items]    
Principal Amounts $ 718 $ 718
Maturity Dates 2028 2028
Interest Rates 0.00% 0.00%
Federal Home Loan Bank Advances Three [Member]    
Federal Home Loan Bank, Advance, Branch of FHLBank [Line Items]    
Principal Amounts $ 400 $ 400
Maturity Dates 2029 2029
Interest Rates 0.00% 0.00%
Federal Home Loan Bank Advances Four [Member]    
Federal Home Loan Bank, Advance, Branch of FHLBank [Line Items]    
Principal Amounts $ 200 $ 200
Maturity Dates 2030 2030
Interest Rates 0.00% 0.00%
Federal Home Loan Bank Advances Five [Member]    
Federal Home Loan Bank, Advance, Branch of FHLBank [Line Items]    
Principal Amounts $ 906 $ 430
Maturity Dates 2031 2031
Interest Rates 0.00% 0.00%
Federal Home Loan Bank Advances Six [Member]    
Federal Home Loan Bank, Advance, Branch of FHLBank [Line Items]    
Principal Amounts $ 560 $ 560
Maturity Dates 2032 2032
Interest Rates 0.00% 0.00%