Organization and Summary of Significant Accounting Policies - Goodwill and Intangible Assets (Details) - USD ($)	9 Months Ended	12 Months Ended
	Mar. 31, 2025	Jun. 30, 2024
Finite-Lived Intangible Assets [Line Items]
Impairment loss on goodwill	$ 0	$ 0
Core deposit intangible assets, amortization method	using the straight line method
Impairment of intangible assets	$ 0	0
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	39,100,000	39,100,000
Intangibles assets, accumulated amortization	20,300,000	17,800,000
Remainder of fiscal 2025	857,000
2026	3,100,000
2027	2,700,000
2028	2,700,000
2029	2,700,000
Thereafter	8,900,000
Other identifiable intangibles
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	6,600,000	6,400,000
Intangibles assets, accumulated amortization	4,400,000	4,200,000
Mortgage and SBA servicing rights
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 3,000,000	$ 3,000,000
Minimum | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Intangible assets, amortization period	5 years
Maximum | Core Deposits
Finite-Lived Intangible Assets [Line Items]
Intangible assets, amortization period	10 years