Fair Value Disclosures - Assets Measured at Fair Value on Non-recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other real estate owned	$ 20,100	$ 19,000
Fair Value, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually analyzed loans held for investment	10,111	18,960
Other real estate owned	20,141	19,032
Repossessed Assets Fair Value Disclosure	76
Total assets	30,328	37,992
Fair Value, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually analyzed loans held for investment	0	0
Other real estate owned	0	0
Repossessed Assets Fair Value Disclosure	0
Total assets	0	0
Fair Value, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually analyzed loans held for investment	0	0
Other real estate owned	0	0
Repossessed Assets Fair Value Disclosure	0
Total assets	0	0
Fair Value, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually analyzed loans held for investment	10,111	18,960
Other real estate owned	20,141	19,032
Repossessed Assets Fair Value Disclosure	76
Total assets	$ 30,328	$ 37,992