Securities, Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017 USD ($) Security	Mar. 31, 2016 USD ($)	Mar. 31, 2017 USD ($) Security	Mar. 31, 2016 USD ($)	Jun. 30, 2016 USD ($) Security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 16,439		$ 16,439		$ 924
Less than 12 months, unrealized losses	$ 156		$ 156		$ 5
Less than 12 months, number of securities | Security	26		26		1
More than 12 months, fair value	$ 862		$ 862		$ 0
More than 12 months, unrealized losses	$ 4		$ 4		$ 0
More than 12 months, number of securities | Security	1		1		0
Total, fair value	$ 17,301		$ 17,301		$ 924
Total, unrealized losses	$ 160		$ 160		$ 5
Total, number of securities | Security	27		27		1
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 68,297		$ 68,297		$ 771
Less than 12 months, unrealized losses	$ 875		$ 875		$ 6
Less than 12 months, number of securities | Security	133		133		5
More than 12 months, fair value	$ 228		$ 228		$ 175
More than 12 months, unrealized losses	$ 3		$ 3		$ 1
More than 12 months, number of securities | Security	3		3		2
Total, fair value	$ 68,525		$ 68,525		$ 946
Total, unrealized losses	$ 878		$ 878		$ 7
Total, number of securities | Security	136		136		7
Total Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 84,736		$ 84,736		$ 1,695
Less than 12 months, unrealized losses	$ 1,031		$ 1,031		$ 11
Less than 12 months, number of securities | Security	159		159		6
More than 12 months, fair value	$ 1,090		$ 1,090		$ 175
More than 12 months, unrealized losses	$ 7		$ 7		$ 1
More than 12 months, number of securities | Security	4		4		2
Total, fair value	$ 85,826		$ 85,826		$ 1,870
Total, unrealized losses	$ 1,038		$ 1,038		$ 12
Total, number of securities | Security	163		163		8
Proceeds from sale of available-for-sale securities, debt	$ 0	$ 0	$ 0	$ 0
Gross realized gains (losses) on sale of available-for-sale securities	0	0	0	0
Other-than-temporary impairment losses	0	$ 0	0	$ 0
State and Political Subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	9,444		9,444
Less than 12 months, unrealized losses	$ 5		$ 5
Less than 12 months, number of securities | Security	18		18
More than 12 months, fair value	$ 0		$ 0
More than 12 months, unrealized losses	$ 0		$ 0
More than 12 months, number of securities | Security	0		0
Total, fair value	$ 9,444		$ 9,444
Total, unrealized losses	$ 5		$ 5
Total, number of securities | Security	18		18
Mortgage-backed Securities-Residential [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,195		$ 1,195		$ 924
Less than 12 months, unrealized losses	$ 62		$ 62		$ 5
Less than 12 months, number of securities | Security	2		2		1
More than 12 months, fair value	$ 862		$ 862		$ 0
More than 12 months, unrealized losses	$ 4		$ 4		$ 0
More than 12 months, number of securities | Security	1		1		0
Total, fair value	$ 2,057		$ 2,057		$ 924
Total, unrealized losses	$ 66		$ 66		$ 5
Total, number of securities | Security	3		3		1
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 5,537		$ 5,537
Less than 12 months, unrealized losses	$ 87		$ 87
Less than 12 months, number of securities | Security	3		3
More than 12 months, fair value	$ 0		$ 0
More than 12 months, unrealized losses	$ 0		$ 0
More than 12 months, number of securities | Security	0		0
Total, fair value	$ 5,537		$ 5,537
Total, unrealized losses	$ 87		$ 87
Total, number of securities | Security	3		3
Corporate Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 263		$ 263
Less than 12 months, unrealized losses	$ 2		$ 2
Less than 12 months, number of securities | Security	3		3
More than 12 months, fair value	$ 0		$ 0
More than 12 months, unrealized losses	$ 0		$ 0
More than 12 months, number of securities | Security	0		0
Total, fair value	$ 263		$ 263
Total, unrealized losses	$ 2		$ 2
Total, number of securities | Security	3		3
U.S. Government Sponsored Enterprises [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,977		$ 1,977
Less than 12 months, unrealized losses	$ 24		$ 24
Less than 12 months, number of securities | Security	1		1
More than 12 months, fair value	$ 0		$ 0
More than 12 months, unrealized losses	$ 0		$ 0
More than 12 months, number of securities | Security	0		0
Total, fair value	$ 1,977		$ 1,977
Total, unrealized losses	$ 24		$ 24		$ 0
Total, number of securities | Security	1		1
State and Political Subdivisions [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 15,720		$ 15,720		272
Less than 12 months, unrealized losses	$ 230		$ 230		$ 2
Less than 12 months, number of securities | Security	106		106		1
More than 12 months, fair value	$ 154		$ 154		$ 175
More than 12 months, unrealized losses	$ 2		$ 2		$ 1
More than 12 months, number of securities | Security	2		2		2
Total, fair value	$ 15,874		$ 15,874		$ 447
Total, unrealized losses	$ 232		$ 232		$ 3
Total, number of securities | Security	108		108		3
Mortgage-backed Securities-Residential [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,874		$ 1,874
Less than 12 months, unrealized losses	$ 2		$ 2
Less than 12 months, number of securities | Security	1		1
More than 12 months, fair value	$ 0		$ 0
More than 12 months, unrealized losses	$ 0		$ 0
More than 12 months, number of securities | Security	0		0
Total, fair value	$ 1,874		$ 1,874
Total, unrealized losses	$ 2		$ 2		$ 0
Total, number of securities | Security	1		1
Mortgage-backed Securities-Multi-family [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 47,261		$ 47,261		499
Less than 12 months, unrealized losses	$ 597		$ 597		$ 4
Less than 12 months, number of securities | Security	21		21		4
More than 12 months, fair value	$ 0		$ 0		$ 0
More than 12 months, unrealized losses	$ 0		$ 0		$ 0
More than 12 months, number of securities | Security	0		0		0
Total, fair value	$ 47,261		$ 47,261		$ 499
Total, unrealized losses	$ 597		$ 597		$ 4
Total, number of securities | Security	21		21		4
Corporate Debt Securities [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 992		$ 992
Less than 12 months, unrealized losses	$ 8		$ 8
Less than 12 months, number of securities | Security	2		2
More than 12 months, fair value	$ 0		$ 0
More than 12 months, unrealized losses	$ 0		$ 0
More than 12 months, number of securities | Security	0		0
Total, fair value	$ 992		$ 992
Total, unrealized losses	$ 8		$ 8		$ 0
Total, number of securities | Security	2		2
Other Securities [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 473		$ 473
Less than 12 months, unrealized losses	$ 14		$ 14
Less than 12 months, number of securities | Security	2		2
More than 12 months, fair value	$ 74		$ 74
More than 12 months, unrealized losses	$ 1		$ 1
More than 12 months, number of securities | Security	1		1
Total, fair value	$ 547		$ 547
Total, unrealized losses	$ 15		$ 15		$ 0
Total, number of securities | Security	3		3