Securities, Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2020 USD ($) Security	Jun. 30, 2019 USD ($) Security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 3,538	$ 856
More than 12 months, fair value	0	0
Total, fair value	3,538	856
Less than 12 months, unrealized losses	17	20
More than 12 months, unrealized losses	0	0
Total, unrealized losses	$ 17	$ 20
Less than 12 months, number of securities | Security	4	1
More than 12 months, number of securities | Security	0	0
Total, number of securities | Security	4	1
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 11,605	$ 4,791
More than 12 months, fair value	361	8,348
Total, fair value	11,966	13,139
Less than 12 months, unrealized losses	41	23
More than 12 months, unrealized losses	128	56
Total, unrealized losses	$ 169	$ 79
Less than 12 months, number of securities | Security	19	23
More than 12 months, number of securities | Security	1	18
Total, number of securities | Security	20	41
Total Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 15,143	$ 5,647
More than 12 months, fair value	361	8,348
Total, fair value	15,504	13,995
Less than 12 months, unrealized losses	58	43
More than 12 months, unrealized losses	128	56
Total, unrealized losses	$ 186	$ 99
Less than 12 months, number of securities | Security	23	24
More than 12 months, number of securities | Security	1	18
Total, number of securities | Security	24	42
Available for sale securities transferred at fair value to held to maturity	$ 0	$ 0
Proceeds from sale of available-for-sale securities	0	0
Gross realized gains (losses) on sale of available-for-sale securities	0	0
Other-than-temporary impairment losses	0	0
U.S. Government Sponsored Enterprises [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value		0
More than 12 months, fair value		1,986
Total, fair value		1,986
Less than 12 months, unrealized losses		0
More than 12 months, unrealized losses		14
Total, unrealized losses	0	$ 14
Less than 12 months, number of securities | Security		0
More than 12 months, number of securities | Security		1
Total, number of securities | Security		1
State and Political Subdivisions [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	3,336	$ 3,541
More than 12 months, fair value	0	2,111
Total, fair value	3,336	5,652
Less than 12 months, unrealized losses	3	17
More than 12 months, unrealized losses	0	6
Total, unrealized losses	$ 3	$ 23
Less than 12 months, number of securities | Security	12	22
More than 12 months, number of securities | Security	0	13
Total, number of securities | Security	12	35
Mortgage-backed Securities-Residential [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 3,604	$ 856
More than 12 months, fair value	0	0
Total, fair value	3,604	856
Less than 12 months, unrealized losses	15	20
More than 12 months, unrealized losses	0	0
Total, unrealized losses	$ 15	$ 20
Less than 12 months, number of securities | Security	2	1
More than 12 months, number of securities | Security	0	0
Total, number of securities | Security	2	1
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Total, unrealized losses	$ 15	$ 0
Mortgage-backed Securities-Multi-Family [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	1,051
More than 12 months, fair value	0
Total, fair value	1,051
Less than 12 months, unrealized losses	4
More than 12 months, unrealized losses	0
Total, unrealized losses	$ 4
Less than 12 months, number of securities | Security	1
More than 12 months, number of securities | Security	0
Total, number of securities | Security	1
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 3,562	1,250
More than 12 months, fair value	0	3,799
Total, fair value	3,562	5,049
Less than 12 months, unrealized losses	21	6
More than 12 months, unrealized losses	0	11
Total, unrealized losses	$ 21	$ 17
Less than 12 months, number of securities | Security	3	1
More than 12 months, number of securities | Security	0	3
Total, number of securities | Security	3	4
Corporate Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 2,487
More than 12 months, fair value	0
Total, fair value	2,487
Less than 12 months, unrealized losses	13
More than 12 months, unrealized losses	0
Total, unrealized losses	$ 13
Less than 12 months, number of securities | Security	3
More than 12 months, number of securities | Security	0
Total, number of securities | Security	3
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,103	$ 0
More than 12 months, fair value	361	452
Total, fair value	1,464	452
Less than 12 months, unrealized losses	2	0
More than 12 months, unrealized losses	128	25
Total, unrealized losses	$ 130	$ 25
Less than 12 months, number of securities | Security	2	0
More than 12 months, number of securities | Security	1	1
Total, number of securities | Security	3	1
Other Securities [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Total, unrealized losses	$ 0	$ 0