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Business Combination and Asset Purchase - Summary of Changes in Accretable Yield or Income Expected to be Collected (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Peoples Federal Savings and Loan [Member]
Business Acquisition [Line Items]
Beginning Balance	$ 450	$ 680	$ 566	$ 798
Additions		2		6
Accretion	(58)	(58)	(174)	(174)
Disposals				(6)
Ending Balance	392	624	392	624
Perpetual Federal Savings Bank [Member]
Business Acquisition [Line Items]
Beginning Balance	2,124	3,572	2,795	4,236
Additions		14		39
Accretion	(335)	(456)	(1,006)	(1,145)
Ending Balance	1,789	3,130	1,789	3,130
Ossian Financial Services, Inc. [Member]
Business Acquisition [Line Items]
Beginning Balance	206	382	294	470
Accretion	(44)	(44)	(132)	(132)
Ending Balance	162	338	162	338
Limberlost Bancshares, Inc. [Member]
Business Acquisition [Line Items]
Beginning Balance	146	575	363	785
Additions		6		11
Accretion	(109)	(109)	(327)	(324)
Reclassification from nonaccretable difference			1
Ending Balance	$ 37	$ 472	$ 37	$ 472

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+ References

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- Definition

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- Definition

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.

+ References

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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