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Loans Receivable - Schedule of ACL by Portfolio Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Residential real estate:
Beginning balance	$ 2,141	$ 2,132	$ 2,127
Recoveries			1
Credit Losses for Unfunded Liabilities	(1)	2	(3)	(3)
Provision for (recovery of) credit losses on loans	21	(28)	36	(13)
Loans charged off				(9)
Ending balance	2,161	2,106	2,161	2,106
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			21	58
Loans charged off				(9)
Ending balance	1,682	1,646	1,682	1,646
Multi-family [Member]
Residential real estate:
Beginning balance			100
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans			(2)	(33)
Loans charged off
Ending balance	98	100	98	100
Construction [Member]
Residential real estate:
Beginning balance	87	124	122
Recoveries
Credit Losses for Unfunded Liabilities	(1)	2	(3)	(1)
Provision for (recovery of) credit losses on loans	(5)	(22)	(38)	(33)
Loans charged off
Ending balance	81	104	81	104
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	24	22	24	22
Farm [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	174	198	192
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans	5	(27)	(13)	(13)
Loans charged off
Ending balance	179	171	179	171
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)		(1)
Loans charged off
Ending balance	2	5	2	5
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			62	2
Loans charged off
Ending balance	77	51	77	51
Unsecured [Member]
Residential real estate:
Beginning balance	2	1	3
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans		1	(1)	1
Loans charged off
Ending balance	2	2	2	2
Loans on deposits [Member]
Residential real estate:
Beginning balance
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans
Loans charged off
Ending balance
Automobile [Member]
Residential real estate:
Beginning balance
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	1,618	1,587
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans	64	59
Loans charged off
Ending balance	1,682	1,646	1,682	1,646
Multifamily [Member]
Residential real estate:
Beginning balance	98	130
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans		(30)
Loans charged off
Ending balance	98	100	98	100
Land [Member]
Residential real estate:
Beginning balance	32	22
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans	(8)
Loans charged off
Ending balance	24	22	24	22
Farm [Member]
Residential real estate:
Beginning balance	16	5
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans
Loans charged off
Ending balance	16	5	16	5
Home Equity [Member]
Residential real estate:
Beginning balance	111	59
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans	(34)	(8)
Loans charged off
Ending balance	$ 77	51	$ 77	51
Commercial nonmortgage [Member]
Residential real estate:
Beginning balance		6
Recoveries
Credit Losses for Unfunded Liabilities
Provision for (recovery of) credit losses on loans		(1)
Loans charged off
Ending balance		$ 5		5
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 [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 [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 [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 [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 [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 [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 [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 [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 [Member]
Residential real estate:
Beginning balance				$ 1

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