Business Combination and Asset Purchase - Schedule of Annual Amortization of Core Deposit Intangible Assets (Detail) $ in Thousands	Sep. 30, 2021 USD ($)
Business Acquisition [Line Items]
2021	$ 653
2022	700
2023	700
2024	700
2025	700
Finite-Lived Intangible Assets, Net	3,453
Customer Lists [Member]
Business Acquisition [Line Items]
2021	123
Geneva [Member]
Business Acquisition [Line Items]
2021	560
2022	560
2023	560
2024	560
2025	560
Finite-Lived Intangible Assets, Net	2,800
Ossian [Member]
Business Acquisition [Line Items]
2021	93
2022	140
2023	140
2024	140
2025	140
Thereafter	327
Finite-Lived Intangible Assets, Net	980
Adams County Financial Resources [Member] \| Customer Lists [Member]
Business Acquisition [Line Items]
2021	123
2022	123
2023	123
2024	123
2025	123
Thereafter	169
Finite-Lived Intangible Assets, Net	$ 784

Finite lived intangible assets amortization expense after year four.

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+ References

No definition available.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Paragraph 2
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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year.

+ References

No definition available.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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- Definition

Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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