Advances from Federal Home Loan Bank (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Jun. 30, 2019
Federal Home Loan Bank Advances	$ 70,024	$ 44,908
Weighted-average rate	2.01%	2.42%
08/19/19 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.52%
Federal Home Loan Bank Advances	$ 0	$ 200
11/22/19 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.91%
Federal Home Loan Bank Advances	$ 0	1,741
12/30/19 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.92%
Federal Home Loan Bank Advances	$ 0	249
01/14/20 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.76%
Federal Home Loan Bank Advances	$ 0	249
03/31/20 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.49%
Federal Home Loan Bank Advances	$ 0	248
06/10/20 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.26%
Federal Home Loan Bank Advances	$ 0	247
09/09/20 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	2.02%
Federal Home Loan Bank Advances	$ 4,982	4,929
11/23/20 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	2.13%
Federal Home Loan Bank Advances	$ 1,741	1,725
01/14/21 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.92%
Federal Home Loan Bank Advances	$ 249	247
03/31/21 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.68%
Federal Home Loan Bank Advances	$ 248	246
05/17/21 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	2.43%
Federal Home Loan Bank Advances	$ 5,000	5,000
06/10/21 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.42%
Federal Home Loan Bank Advances	$ 247	244
09/07/21 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	2.81%
Federal Home Loan Bank Advances	$ 9,000	9,000
09/09/21 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	2.28%
Federal Home Loan Bank Advances	$ 1,977	1,960
10/01/21 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	2.53%
Federal Home Loan Bank Advances	$ 5,000	5,000
11/16/21 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	2.43%
Federal Home Loan Bank Advances	$ 5,000	5,000
03/07/22 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	0.95%
Federal Home Loan Bank Advances	$ 3,000	0
03/31/22 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.91%
Federal Home Loan Bank Advances	$ 246	244
08/15/22 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.89%
Federal Home Loan Bank Advances	$ 3,000	0
03/06/23 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	0.99%
Federal Home Loan Bank Advances	$ 3,000	0
03/06/24 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	0.95%
Federal Home Loan Bank Advances	$ 3,000	0
03/28/24 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	2.56%
Federal Home Loan Bank Advances	$ 8,000	8,000
08/13/24 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.88%
Federal Home Loan Bank Advances	$ 3,000	0
02/21/25 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.28%
Federal Home Loan Bank Advances	$ 5,000	0
02/21/25 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.53%
Federal Home Loan Bank Advances	$ 5,000	0
03/06/25 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	1.01%
Federal Home Loan Bank Advances	$ 3,000	0
12/14/26 | Federal Home Loan Bank Advances Maturity Date
Federal Home Loan Bank, Advances, Interest Rate	2.65%
Federal Home Loan Bank Advances	$ 334	$ 379