Debt Securities - Schedule of Amortized Cost and Fair Value of Securities Available-for-Sale and Securities Held-to-Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Jun. 30, 2025
Agency mortgage-backed: residential [Member]
Available-for-sale Securities
Available-for-sale Securities, Amortized cost	$ 10,378	$ 9,950
Available-for-sale Securities, Gross unrealized gains	2
Available-for-sale Securities, Gross unrealized losses	115	193
Available-for-sale Securities, Estimated fair value	10,265	9,757
Held-to-maturity Securities
Held-to-maturity Securities, Amortized cost	143	171
Held-to-maturity Securities, Gross unrealized gains	1
Held-to-maturity Securities, Gross unrealized losses	3	4
Held-to-maturity Securities, Estimated fair value	141	167
Total Temporarily Impaired AFS Securities [Member]
Available-for-sale Securities
Available-for-sale Securities, Amortized cost	8,520	8,700
Available-for-sale Securities, Gross unrealized losses	115	193
Available-for-sale Securities, Estimated fair value	8,405	8,507
Total Temporarily Impaired HTM Securities [Member]
Held-to-maturity Securities
Held-to-maturity Securities, Amortized cost	83	171
Held-to-maturity Securities, Gross unrealized losses	3	4
Held-to-maturity Securities, Estimated fair value	80	167
Less Than 12 Months [Member] \| Agency mortgage-backed securities [Member]
Available-for-sale Securities
Available-for-sale Securities, Amortized cost	2,563	2,000
Available-for-sale Securities, Gross unrealized losses	6	20
Available-for-sale Securities, Estimated fair value	2,557	1,980
Held-to-maturity Securities
Held-to-maturity Securities, Amortized cost
Held-to-maturity Securities, Gross unrealized losses
Held-to-maturity Securities, Estimated fair value
12 Months or More [Member] \| Agency mortgage-backed securities [Member]
Available-for-sale Securities
Available-for-sale Securities, Amortized cost	5,957	6,700
Available-for-sale Securities, Gross unrealized losses	109	173
Available-for-sale Securities, Estimated fair value	5,848	6,527
Held-to-maturity Securities
Held-to-maturity Securities, Amortized cost	83	171
Held-to-maturity Securities, Gross unrealized losses	3	4
Held-to-maturity Securities, Estimated fair value	$ 80	$ 167

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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