Fair Values of Assets and Liabilities - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2025
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Impaired loans considered to be credit risk of non-collection	$ 250		$ 250
Updated appraisal requirement floor	250		250
Other real estate owned	2,270		2,270		$ 990
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfers out of Level 3			0	$ 0
Total gains or losses included in earnings			0	0
Derivatives mark to market	95	$ 0	89	$ (153)
Financial instrument of credit risk	$ 300		$ 300		$ 300

Impaired loans fair value non collection.

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- Definition

Updated appraisal requirement floor.

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- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Fair value of commitment subject to concentration of credit or market risk or both.

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Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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Amount of transfers of financial instrument classified as an asset out of level 3 of the fair value hierarchy.

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Carrying amount as of the balance sheet date of land and buildings obtained through foreclosure proceedings or defeasance in full or partial satisfaction of a debt arrangement.

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