Premises and Equipment - Additional Information (Details)	12 Months Ended
	Jun. 30, 2020 USD ($) property	Jun. 30, 2019 USD ($)
Number of leased properties | property	5
Initial Leases and Lease Modifications and Renewals	$ 437,000
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	$ 1,600,000
Operating Lease, Weighted Average Discount Rate, Percent	5.00%
Operating lease expense	$ 214,000	$ 213,000
Minimum
Lessee Expected Lease Terms	P18M
Maximum
Lessee Expected Lease Terms	P20Y