Quarterly report pursuant to Section 13 or 15(d)

Borrowings and Subordinated Debentures - Summary of Financial Data Pertaining to Federal Home Loan Bank Advances (Detail)

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Borrowings and Subordinated Debentures - Summary of Financial Data Pertaining to Federal Home Loan Bank Advances (Detail) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2024
Dec. 31, 2023
Federal Home Loan Banks [Abstract]    
Weighted-average interest rate at end of period 4.81% 4.69%
Weighted-average interest rate during the period 4.31% 3.48%
Average balance of FHLB advances $ 158,312,000 $ 197,390,000
Maximum amount outstanding at any month-end $ 350,000,000 $ 450,000,000