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Loans Receivable - Schedule of ACL by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Residential real estate:
Beginning balance	$ 2,141	$ 2,126	$ 2,127
Recoveries			1
Credit Losses for Unfunded Liabilities		(3)	(2)	(5)
Provision for (recovery of) credit losses on loans		9	15	15
Loans charged off				(9)
Ending balance	2,141	2,132	2,141	2,132
One- to four-family [Member]
Residential real estate:
Beginning balance			1,661
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans			(43)	(1)
Loans charged off				(9)
Ending balance	1,618	1,587	1,618	1,587
Multi-family [Member]
Residential real estate:
Beginning balance			100
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans			(2)	(3)
Loans charged off
Ending balance	98	130	98	130
Construction [Member]
Residential real estate:
Beginning balance	119	128	122
Recoveries
Credit Losses for Unfunded Liabilities		(2)	(2)	(3)
Provision for (recovery of) credit losses on loans	(32)	(2)	(33)	(11)
Loans charged off
Ending balance	87	124	87	124
Land [Member]
Residential real estate:
Beginning balance			28
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans			4	7
Loans charged off
Ending balance	32	22	32	22
Farm Loan [Member]
Residential real estate:
Beginning balance			4
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans			12	(1)
Loans charged off
Ending balance	16	5	16	5
Nonresidential real estate [Member]
Residential real estate:
Beginning balance	199	179	192
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans	(25)	19	(18)	14
Loans charged off
Ending balance	174	198	174	198
Commercial and Industrial [Member]
Residential real estate:
Beginning balance	3		3
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans				1
Loans charged off
Ending balance	3	6	3	6
Home Equity [Member]
Residential real estate:
Beginning balance			14
Recoveries			1
Credit Losses for Unfunded Liabilities				(2)
Provision for (recovery of) credit losses on loans			96	10
Loans charged off
Ending balance	111	59	111	59
Unsecured Loan Member
Residential real estate:
Beginning balance			3
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans			(1)
Loans charged off
Ending balance	2	1	2	1
Loans on deposits [Member]
Residential real estate:
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans
Loans charged off
Ending balance
Automobile Loan [Member]
Residential real estate:
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans				(1)
Loans charged off
Ending balance
One- To Four-Family [Member]
Residential real estate:
Beginning balance	1,627	1,612
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans	(9)	(25)
Loans charged off
Ending balance	1,618	1,587	1,618	1,587
Multifamily [Member]
Residential real estate:
Beginning balance	97	130
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans	1
Loans charged off
Ending balance	98	130	98	130
Land [Member]
Residential real estate:
Beginning balance	27	14
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans	5	8
Loans charged off
Ending balance	32	22	32	22
Farm [Member]
Residential real estate:
Beginning balance	4	5
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans	12
Loans charged off
Ending balance	16	5	16	5
Home Equity [Member]
Residential real estate:
Beginning balance	63	52
Recoveries
Credit Losses for Unfunded Liabilities		(1)
Provision for (recovery of) credit losses on loans	48	8
Loans charged off
Ending balance	111	59	111	59
Unsecured [Member]
Residential real estate:
Beginning balance	2	1
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans
Loans charged off
Ending balance	$ 2	1	$ 2	1
Commercial nonmortgage [Member]
Residential real estate:
Beginning balance		5
Recoveries
Provision for (recovery of) credit losses on loans		1
Loans charged off
Ending balance		$ 6		6
Pre-ASC 326 Adoption [Member]
Residential real estate:
Beginning balance				1,634
Pre-ASC 326 Adoption [Member] | One- to four-family [Member]
Residential real estate:
Beginning balance				857
Pre-ASC 326 Adoption [Member] | Multi-family [Member]
Residential real estate:
Beginning balance				278
Pre-ASC 326 Adoption [Member] | Construction [Member]
Residential real estate:
Beginning balance				41
Pre-ASC 326 Adoption [Member] | Land [Member]
Residential real estate:
Beginning balance				1
Pre-ASC 326 Adoption [Member] | Farm Loan [Member]
Residential real estate:
Beginning balance				4
Pre-ASC 326 Adoption [Member] | Nonresidential real estate [Member]
Residential real estate:
Beginning balance				405
Pre-ASC 326 Adoption [Member] | Commercial and Industrial [Member]
Residential real estate:
Beginning balance				23
Pre-ASC 326 Adoption [Member] | Home Equity [Member]
Residential real estate:
Beginning balance				23
Pre-ASC 326 Adoption [Member] | Unsecured Loan Member
Residential real estate:
Beginning balance				1
Pre-ASC 326 Adoption [Member] | Loans on deposits [Member]
Residential real estate:
Beginning balance				1
Pre-ASC 326 Adoption [Member] | Automobile Loan [Member]
Residential real estate:
Beginning balance
Impact of ASC 326 Adoption [Member]
Residential real estate:
Beginning balance				497
Impact of ASC 326 Adoption [Member] | One- to four-family [Member]
Residential real estate:
Beginning balance				740
Impact of ASC 326 Adoption [Member] | Multi-family [Member]
Residential real estate:
Beginning balance				(145)
Impact of ASC 326 Adoption [Member] | Construction [Member]
Residential real estate:
Beginning balance				97
Impact of ASC 326 Adoption [Member] | Land [Member]
Residential real estate:
Beginning balance				14
Impact of ASC 326 Adoption [Member] | Farm Loan [Member]
Residential real estate:
Beginning balance				2
Impact of ASC 326 Adoption [Member] | Nonresidential real estate [Member]
Residential real estate:
Beginning balance				(221)
Impact of ASC 326 Adoption [Member] | Commercial and Industrial [Member]
Residential real estate:
Beginning balance				(18)
Impact of ASC 326 Adoption [Member] | Home Equity [Member]
Residential real estate:
Beginning balance				28
Impact of ASC 326 Adoption [Member] | Unsecured Loan Member
Residential real estate:
Beginning balance
Impact of ASC 326 Adoption [Member] | Loans on deposits [Member]
Residential real estate:
Beginning balance				(1)
Impact of ASC 326 Adoption [Member] | Automobile Loan [Member]
Residential real estate:
Beginning balance				1
As Reported Under ASC 326 [Member]
Residential real estate:
Beginning balance				2,131
As Reported Under ASC 326 [Member] | One- to four-family [Member]
Residential real estate:
Beginning balance				1,597
As Reported Under ASC 326 [Member] | Multi-family [Member]
Residential real estate:
Beginning balance				133
As Reported Under ASC 326 [Member] | Construction [Member]
Residential real estate:
Beginning balance				138
As Reported Under ASC 326 [Member] | Land [Member]
Residential real estate:
Beginning balance				15
As Reported Under ASC 326 [Member] | Farm Loan [Member]
Residential real estate:
Beginning balance				6
As Reported Under ASC 326 [Member] | Nonresidential real estate [Member]
Residential real estate:
Beginning balance				184
As Reported Under ASC 326 [Member] | Commercial and Industrial [Member]
Residential real estate:
Beginning balance				5
As Reported Under ASC 326 [Member] | Home Equity [Member]
Residential real estate:
Beginning balance				51
As Reported Under ASC 326 [Member] | Unsecured Loan Member
Residential real estate:
Beginning balance				1
As Reported Under ASC 326 [Member] | Loans on deposits [Member]
Residential real estate:
Beginning balance
As Reported Under ASC 326 [Member] | Automobile Loan [Member]
Residential real estate:
Beginning balance				$ 1

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