Organization and Summary of Significant Accounting Policies - Goodwill and Intangible Assets (Details) - USD ($)	9 Months Ended	12 Months Ended
	Mar. 31, 2022	Jun. 30, 2021
Finite-Lived Intangible Assets [Line Items]
Impairment loss on goodwill	$ 0	$ 0
Intangible assets, net		1,900,000
Core deposit intangible assets, amortization method	using the straight line method
Core Deposits
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	$ 17,000,000.0	15,300,000
Intangibles assets, accumulated amortization	11,100,000	10,100,000
Remainder of fiscal 2022	402,000
2023	1,600,000
2024	1,600,000
2025	1,100,000
Thereafter	1,300,000
Impairment of intangible assets		0
Other identifiable intangibles
Finite-Lived Intangible Assets [Line Items]
Intangible assets, gross	3,800,000	3,800,000
Intangibles assets, accumulated amortization	3,800,000	$ 3,800,000
Impairment of intangible assets	0
Mortgage servicing rights
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 1,900,000
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	7 years