Securities - Schedule of Gross Realized Gains and Losses on the Sales and Calls of Securities as well as Gains and Losses on Equity Securities (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Available-for-Sale Securities, Gross Unrealized Gain (Loss) [Line Items]
Gross realized gains	$ 107	$ 60	$ 138	$ 200
Gross realized losses	(9)		(11)	(39)
Net gains on debt securities	98	60	127	161
Net Unrealized (losses) gains recognized on securities still held	(1,281)	417	(1,959)	595
Net securities (losses) gains	$ (1,183)	$ 477	$ (1,832)	$ 756

Amount of unrealized and realized gain (loss) on investment in debt and equity securities.

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Amount of realized gain on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
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Amount of realized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of realized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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-Publisher FASB
-Name Accounting Standards Codification
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-Section S99
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Available-for-sale securities, gross unrealized gain (loss).

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