Commitments and Contingencies - Summary of Off-Balance Sheet Financial Instruments (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Commitments and Contingencies Disclosure [Line Items]
Total	$ 189,511	$ 286,031
Performance and standby letters of credit [Member]
Commitments and Contingencies Disclosure [Line Items]
Total	1,420	486
Undisbursed loans-in-process (Construction) [Member]
Commitments and Contingencies Disclosure [Line Items]
Total	140,538	229,155
Commitments to fund loans [Member]
Commitments and Contingencies Disclosure [Line Items]
Total	41,753	51,817
Unfunded commitments under lines of credit [Member]
Commitments and Contingencies Disclosure [Line Items]
Total	$ 5,800	$ 4,573