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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
	Mar. 31, 2025	Mar. 31, 2024
Peoples Federal Savings and Loan [Member]
Business Acquisition [Line Items]
Beginning Balance	$ 335	$ 566
Additions	0
Accretion	(58)	(58)
Reclassification from nonaccretable difference	0
Disposals	0
Ending Balance	277	508
Perpetual Federal Savings Bank [Member]
Business Acquisition [Line Items]
Beginning Balance	1,453	2,795
Additions	0
Accretion	(336)	(335)
Reclassification from nonaccretable difference	0
Disposals	0
Ending Balance	1,117	2,460
Ossian Financial Services, Inc. [Member]
Business Acquisition [Line Items]
Beginning Balance	107	294
Additions	0
Accretion	(40)	(44)
Reclassification from nonaccretable difference	0
Disposals	0
Ending Balance	67	250
Limberlost Bancshares, Inc. [Member]
Business Acquisition [Line Items]
Beginning Balance	0	363
Additions	0
Accretion	0	(109)
Reclassification from nonaccretable difference	0
Disposals	0
Ending Balance	$ 0	$ 254

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+ References

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- Definition

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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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