Loans Held for Investment - Schedule of Allowance For Credit Losses and Recorded Investment in Gross Loans, by Portfolio (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Financing Receivable, Allowance for Credit Losses [Line Items]
ACL, beginning of period	$ 6,424	$ 7,065
(Recovery of) provision for credit losses	(574)	(641)
ACL, end of period	5,850	6,424
Allowance for credit losses: Collectively evaluated for impairment	5,850	6,424
Loans held for investment: Individually evaluated for allowances	455	836
Loans held for investment: Collectively evaluated for allowances	1,028,146	1,041,587
Total loans held for investment	$ 1,028,601	$ 1,042,423
ACL on loans as a percentage of gross loans held for investment	0.57%	0.62%
Commercial business loans
Financing Receivable, Allowance for Credit Losses [Line Items]
ACL, beginning of period	$ 6	$ 11
(Recovery of) provision for credit losses	(6)	(5)
ACL, end of period		6
Allowance for credit losses: Collectively evaluated for impairment		6
Loans held for investment: Collectively evaluated for allowances		1,267
Total loans held for investment		$ 1,267
ACL on loans as a percentage of gross loans held for investment		0.47%
Consumer loans
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans held for investment: Collectively evaluated for allowances	58	$ 57
Total loans held for investment	58	57
Single-family \| Mortgage loans
Financing Receivable, Allowance for Credit Losses [Line Items]
ACL, beginning of period	5,734	6,295
(Recovery of) provision for credit losses	(430)	(561)
ACL, end of period	5,304	5,734
Allowance for credit losses: Collectively evaluated for impairment	5,304	5,734
Loans held for investment: Individually evaluated for allowances		369
Loans held for investment: Collectively evaluated for allowances	565,930	544,056
Total loans held for investment	$ 565,930	$ 544,425
ACL on loans as a percentage of gross loans held for investment	0.94%	1.05%
Multi-family \| Mortgage loans
Financing Receivable, Allowance for Credit Losses [Line Items]
ACL, beginning of period	$ 615	$ 595
(Recovery of) provision for credit losses	(112)	20
ACL, end of period	503	615
Allowance for credit losses: Collectively evaluated for impairment	503	615
Loans held for investment: Individually evaluated for allowances	455	467
Loans held for investment: Collectively evaluated for allowances	395,427	422,950
Total loans held for investment	$ 395,882	$ 423,417
ACL on loans as a percentage of gross loans held for investment	0.13%	0.15%
Commercial real estate \| Mortgage loans
Financing Receivable, Allowance for Credit Losses [Line Items]
ACL, beginning of period	$ 55	$ 66
(Recovery of) provision for credit losses	(12)	(11)
ACL, end of period	43	55
Allowance for credit losses: Collectively evaluated for impairment	43	55
Loans held for investment: Collectively evaluated for allowances	66,731	72,766
Total loans held for investment	$ 66,731	$ 72,766
ACL on loans as a percentage of gross loans held for investment	0.06%	0.08%
Construction \| Mortgage loans
Financing Receivable, Allowance for Credit Losses [Line Items]
ACL, beginning of period	$ 12	$ 97
(Recovery of) provision for credit losses	(12)	(85)
ACL, end of period		12
Allowance for credit losses: Collectively evaluated for impairment		12
Loans held for investment: Collectively evaluated for allowances		402
Total loans held for investment		$ 402
ACL on loans as a percentage of gross loans held for investment		2.99%
Other \| Mortgage loans
Financing Receivable, Allowance for Credit Losses [Line Items]
ACL, beginning of period	2	$ 1
(Recovery of) provision for credit losses	$ (2)	1
ACL, end of period		2
Allowance for credit losses: Collectively evaluated for impairment		2
Loans held for investment: Collectively evaluated for allowances		89
Total loans held for investment		$ 89
ACL on loans as a percentage of gross loans held for investment		2.25%

Represents amount of allowance for loan losses as a percentage of gross loans-held for investment.

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- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

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Amount of allowance for credit loss on financing receivable evaluated on collective basis. Excludes financing receivable evaluated on individual basis.

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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.

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+ References

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Amortized cost excluding accrued interest, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes net investment in lease.

+ References

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Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease.

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Amount of financing receivable individually evaluated for credit loss. Excludes financing receivable collectively evaluated for credit loss.

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