Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disclosure Of Other Comprehensive Income Loss [Abstract]
Gains on sale of securities available-for-sale				$ (52)
Tax effect				14
Net (loss) income				(38)
Net amortization of bond premiums	$ 251	$ 249	$ 490	487
Tax effect	(68)	(67)	(132)	(132)
Net (loss) income	183	182	358	355
Gains on termination of interest rate swaps			(849)
Tax effect			230
Net (loss) income			(619)
Net interest expense on swaps		(6)		7
Tax effect		2		(2)
Net (loss) income		(4)		5
Total reclassification adjustments	$ 183	$ 178	$ (261)	$ 322

Disclosure of Other Comprehensive Income Loss

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Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Gains On Termination Of Interest Rate Swaps Net Of Tax

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Other Comprehensive Income Loss Reclassification Adjustment From AOCI For Gains On Termination Of Interest Rate Swaps Tax

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Other comprehensive income (loss) reclassification adjustment from AOCI for interest expense (income) on swaps before tax.

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Other comprehensive income (loss) reclassification adjustment from AOCI for interest expense (income) on swaps, net of tax.

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Other comprehensive income (loss) reclassification adjustment from AOCI for interest expense (income) on swaps, tax.

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Other comprehensive income (loss) reclassification adjustment from AOCI for sale and for write down of securities and for net interest expense income on swaps, net of tax.

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Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount before tax of reclassification adjustment from accumulated other comprehensive income for unrealized loss realized upon the write-down of available-for-sale securities.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized loss realized upon the write-down of available-for-sale securities.

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Amount of tax (expense) benefit of reclassification adjustment from accumulated other comprehensive income for unrealized loss realized upon the write-down of available-for-sale securities.

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