Other Comprehensive Income - Summary of Changes in Component of AOCI (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Balance at the beginning of the period	[1]	$ 721	$ 1,381
Other comprehensive (loss) income before reclassification	[1]	(4,887)	(506)
Amounts reclassified from AOCI	[1]	144	(42)
Other comprehensive loss	[1]	(4,743)	(548)
Balance at the end of the period	[1]	(4,022)	833
Net Unrealized Gains (Losses) on AFS Securities [Member]
Balance at the beginning of the period	[1]	575	1,481
Other comprehensive (loss) income before reclassification	[1]	(5,195)	(678)
Amounts reclassified from AOCI	[1]	135	(46)
Other comprehensive loss	[1]	(5,060)	(724)
Balance at the end of the period	[1]	(4,485)	757
Net Unrealized Gains (Losses) on Cash Flow Hedges [Member]
Balance at the beginning of the period	[1]	146	(100)
Other comprehensive (loss) income before reclassification	[1]	308	172
Amounts reclassified from AOCI	[1]	9	4
Other comprehensive loss	[1]	317	176
Balance at the end of the period	[1]	$ 463	$ 76

[1] All amounts are net of tax