Other Comprehensive Income (Loss) - Summary of Changes in Component of AOCI (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Balance at the beginning of the period	$ (7,153)	$ (9,922)	$ (5,944)	$ (9,727)
Other comprehensive income (loss) before reclassification	2,086	(5,023)	669	(4,958)
Amounts reclassified from AOCI	92	162	300	(98)
Other comprehensive income (loss)	2,178	(4,861)	969	(5,056)
Balance at the end of the period	(4,975)	(14,783)	(4,975)	(14,783)
Net Unrealized Income (Losses) on AFS Securities [Member]
Balance at the beginning of the period	(7,153)	(9,922)	(5,944)	(10,428)
Other comprehensive income (loss) before reclassification	2,182	(5,023)	765	(4,876)
Amounts reclassified from AOCI	107	162	315	521
Other comprehensive income (loss)	2,289	(4,861)	1,080	(4,355)
Balance at the end of the period	(4,864)	$ (14,783)	(4,864)	(14,783)
Net Unrealized Losses on Cash Flow Hedges [Member]
Balance at the beginning of the period				701
Other comprehensive income (loss) before reclassification	(96)		(96)	(82)
Amounts reclassified from AOCI	(15)		(15)	(619)
Other comprehensive income (loss)	(111)		(111)	$ (701)
Balance at the end of the period	$ (111)		$ (111)