Other Long-term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Long-term debt	$ 4,122	$ 4,862
Borrowings from FHLB [Member]
Debt Instrument [Line Items]
2015	$ 769	$ 740
2015, Weighted Average Contractual Rate	3.86%	3.86%
2016	$ 799	$ 769
2016, Weighted Average Contractual Rate	3.86%	3.86%
2017	$ 830	$ 799
2017, Weighted Average Contractual Rate	3.87%	3.86%
2018	$ 863	$ 830
2018, Weighted Average Contractual Rate	3.87%	3.87%
2019	$ 620	$ 863
2019, Weighted Average Contractual Rate	3.64%	3.87%
Thereafter	$ 241	$ 861
Thereafter, Weighted Average Contractual Rate	3.13%	3.49%