Other Comprehensive Income (Loss) - Summary of Changes in Component of AOCI (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020
Balance at the beginning of the period	[1]	$ 1,381	$ 521
Other comprehensive income (loss) before reclassification	[1]	(815)	865
Amounts reclassified from AOCI	[1]	155	(5)
Other comprehensive income (loss)	[1]	(660)	860
Balance at the end of the period	[1]	721	1,381
Net Unrealized Gains (Losses) on AFS Securities [Member]
Balance at the beginning of the period	[1]	1,481	521
Other comprehensive income (loss) before reclassification	[1]	(1,026)	967
Amounts reclassified from AOCI	[1]	120	(7)
Other comprehensive income (loss)	[1]	(906)	960
Balance at the end of the period	[1]	575	1,481
Net Unrealized Losses on Cash Flow Hedges [Member]
Balance at the beginning of the period	[1]	(100)
Other comprehensive income (loss) before reclassification	[1]	211	(102)
Amounts reclassified from AOCI	[1]	35	2
Other comprehensive income (loss)	[1]	246	(100)
Balance at the end of the period	[1]	$ 146	$ (100)

[1] All amounts are net of tax