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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		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Peoples Federal Savings and Loan [Member]
Business Acquisition [Line Items]
Beginning Balance	$ 508	$ 741	$ 566	$ 798
Additions		3		4
Accretion	(58)	(58)	(116)	(116)
Disposals		(6)		(6)
Ending Balance	450	680	450	680
Perpetual Federal Savings Bank [Member]
Business Acquisition [Line Items]
Beginning Balance	2,460	3,906	2,795	4,236
Additions		11		25
Accretion	(336)	(345)	(671)	(689)
Ending Balance	2,124	3,572	2,124	3,572
Ossian Financial Services, Inc. [Member]
Business Acquisition [Line Items]
Beginning Balance	250	426	294	470
Accretion	(44)	(44)	(88)	(88)
Ending Balance	206	382	206	382
Limberlost Bancshares, Inc. [Member]
Business Acquisition [Line Items]
Beginning Balance	254	681	363	785
Additions		2		5
Accretion	(109)	(108)	(218)	(215)
Reclassification from nonaccretable difference	1		1
Ending Balance	$ 146	$ 575	$ 146	$ 575

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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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