Business Combination & Asset Purchase - Schedule of Future Amortization of Core Deposit Intangible Assets (Detail) $ in Thousands	Dec. 31, 2023 USD ($)
Core Deposits [Member]
Business Acquisition [Line Items]
2024	$ 1,656
2025	1,656
2026	1,096
2027	1,096
2028	981
Thereafter	646
Total	7,131
Core Deposits [Member] \| Geneva [Member]
Business Acquisition [Line Items]
2024	560
2025	560
Total	1,120
Core Deposits [Member] \| Ossian [Member]
Business Acquisition [Line Items]
2024	140
2025	140
2026	140
2027	140
2028	47
Total	607
Core Deposits [Member] \| Perpetual Federal Savings Bank [Member]
Business Acquisition [Line Items]
2024	95
2025	95
2026	95
2027	95
2028	73
Total	453
Core Deposits [Member] \| Peoples Federal Savings and Loan [Member]
Business Acquisition [Line Items]
2024	861
2025	861
2026	861
2027	861
2028	861
Thereafter	646
Total	4,951
Customer Lists [Member] \| Adams County Financial Resources [Member]
Business Acquisition [Line Items]
2024	123
2025	123
2026	123
2027	48
Total	$ 417

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479907/805-20-50-5

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483154/926-20-50-5

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