Securities Available-for-Sale - Summary of gross unrealized losses and fair value for those investments with unrealized losses (Detail) $ in Thousands	Dec. 31, 2022 USD ($) Number	Dec. 31, 2021 USD ($) Number
Less than 12 Months, Number of Securities | Number	113	43
Less than 12 Months, Fair Value	$ 68,033	$ 36,824
Less than 12 Months, Unrealized Losses	$ (7,853)	$ (633)
More than 12 Months, Number of Securities | Number	41	4
More than 12 Months, Fair Value	$ 28,219	$ 3,837
More than 12 Months, Unrealized Losses	(6,628)	(135)
Total, Fair Value	96,252	40,661
Total, Unrealized Losses	$ (14,481)	$ (768)
U.S. Government-sponsored enterprises obligations [Member]
Less than 12 Months, Number of Securities | Number	1	7
Less than 12 Months, Fair Value	$ 453	$ 5,022
Less than 12 Months, Unrealized Losses	$ (43)	$ (80)
More than 12 Months, Number of Securities | Number	3	2
More than 12 Months, Fair Value	$ 1,373	$ 949
More than 12 Months, Unrealized Losses	(322)	(47)
Total, Fair Value	1,826	5,971
Total, Unrealized Losses	$ (365)	$ (127)
U.S. Government agency small business administration pools guaranteed by SBA [Member]
Less than 12 Months, Number of Securities | Number	8	3
Less than 12 Months, Fair Value	$ 5,947	$ 2,988
Less than 12 Months, Unrealized Losses	$ (602)	(36)
More than 12 Months, Number of Securities | Number	3
More than 12 Months, Fair Value	$ 2,412
More than 12 Months, Unrealized Losses	(514)
Total, Fair Value	8,359	2,988
Total, Unrealized Losses	$ (1,116)	$ (36)
Collateralized mortgage obligations issued by the FHLMC, FNMA and GNMA [Member]
Less than 12 Months, Number of Securities | Number	5	4
Less than 12 Months, Fair Value	$ 3,212	$ 2,779
Less than 12 Months, Unrealized Losses	$ (209)	(69)
More than 12 Months, Number of Securities | Number	4
More than 12 Months, Fair Value	$ 2,016
More than 12 Months, Unrealized Losses	(499)
Total, Fair Value	5,228	2,779
Total, Unrealized Losses	$ (708)	$ (69)
Residential mortgage backed securities [Member]
Less than 12 Months, Number of Securities | Number	8	22
Less than 12 Months, Fair Value	$ 4,239	$ 19,541
Less than 12 Months, Unrealized Losses	$ (503)	$ (399)
More than 12 Months, Number of Securities | Number	23	1
More than 12 Months, Fair Value	$ 16,649	$ 2,304
More than 12 Months, Unrealized Losses	(4,064)	(85)
Total, Fair Value	20,888	21,845
Total, Unrealized Losses	$ (4,567)	$ (484)
Municipal bonds [Member]
Less than 12 Months, Number of Securities | Number	86	7
Less than 12 Months, Fair Value	$ 49,228	$ 6,494
Less than 12 Months, Unrealized Losses	$ (5,900)	$ (49)
More than 12 Months, Number of Securities | Number	8	1
More than 12 Months, Fair Value	$ 5,769	$ 584
More than 12 Months, Unrealized Losses	(1,229)	(3)
Total, Fair Value	54,997	7,078
Total, Unrealized Losses	$ (7,129)	$ (52)
Corporate debt [Member]
Less than 12 Months, Number of Securities | Number	1
Less than 12 Months, Fair Value	$ 497
Less than 12 Months, Unrealized Losses	(3)
Total, Fair Value	497
Total, Unrealized Losses	$ (3)
Corporate subordinated debt [Member]
Less than 12 Months, Number of Securities | Number	4
Less than 12 Months, Fair Value	$ 4,457
Less than 12 Months, Unrealized Losses	(593)
Total, Fair Value	4,457
Total, Unrealized Losses	$ (593)