Securities, Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2016 USD ($) Security	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) Security	Dec. 31, 2015 USD ($)	Jun. 30, 2016 USD ($) Security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 7,964		$ 7,964		$ 924
Less than 12 months, unrealized losses	$ 150		$ 150		$ 5
Less than 12 months, number of securities | Security	7		7		1
More than 12 months, fair value	$ 880		$ 880		$ 0
More than 12 months, unrealized losses	$ 8		$ 8		$ 0
More than 12 months, number of securities | Security	1		1		0
Total, fair value	$ 8,844		$ 8,844		$ 924
Total, unrealized losses	$ 158		$ 158		$ 5
Total, number of securities | Security	8		8		1
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 87,071		$ 87,071		$ 771
Less than 12 months, unrealized losses	$ 1,573		$ 1,573		$ 6
Less than 12 months, number of securities | Security	160		160		5
More than 12 months, fair value	$ 177		$ 177		$ 175
More than 12 months, unrealized losses	$ 3		$ 3		$ 1
More than 12 months, number of securities | Security	2		2		2
Total, fair value	$ 87,248		$ 87,248		$ 946
Total, unrealized losses	$ 1,576		$ 1,576		$ 7
Total, number of securities | Security	162		162		7
Total Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 95,035		$ 95,035		$ 1,695
Less than 12 months, unrealized losses	$ 1,723		$ 1,723		$ 11
Less than 12 months, number of securities | Security	167		167		6
More than 12 months, fair value	$ 1,057		$ 1,057		$ 175
More than 12 months, unrealized losses	$ 11		$ 11		$ 1
More than 12 months, number of securities | Security	3		3		2
Total, fair value	$ 96,092		$ 96,092		$ 1,870
Total, unrealized losses	$ 1,734		$ 1,734		$ 12
Total, number of securities | Security	170		170		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	793		793
Less than 12 months, unrealized losses	$ 0		$ 0
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	$ 793		$ 793
Total, unrealized losses	$ 0		$ 0
Total, number of securities | Security	1		1
Mortgage-backed Securities-Residential [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,240		$ 1,240		$ 924
Less than 12 months, unrealized losses	$ 46		$ 46		$ 5
Less than 12 months, number of securities | Security	1		1		1
More than 12 months, fair value	$ 876		$ 876		$ 0
More than 12 months, unrealized losses	$ 8		$ 8		$ 0
More than 12 months, number of securities | Security	1		1		0
Total, fair value	$ 2,116		$ 2,116		$ 924
Total, unrealized losses	$ 54		$ 54		$ 5
Total, number of securities | Security	2		2		1
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 5,668		$ 5,668
Less than 12 months, unrealized losses	$ 101		$ 101
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	$ 5,668		$ 5,668
Total, unrealized losses	$ 101		$ 101
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	$ 3		$ 3
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	$ 263		$ 263
Total, unrealized losses	$ 3		$ 3
Total, number of securities | Security	2		2
U.S. Government Sponsored Enterprises [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,945		$ 1,945
Less than 12 months, unrealized losses	$ 55		$ 55
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	$ 1,945		$ 1,945
Total, unrealized losses	$ 55		$ 55		$ 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	$ 26,934		$ 26,934		272
Less than 12 months, unrealized losses	$ 429		$ 429		$ 2
Less than 12 months, number of securities | Security	133		133		1
More than 12 months, fair value	$ 103		$ 103		$ 175
More than 12 months, unrealized losses	$ 2		$ 2		$ 1
More than 12 months, number of securities | Security	1		1		2
Total, fair value	$ 27,037		$ 27,037		$ 447
Total, unrealized losses	$ 431		$ 431		$ 3
Total, number of securities | Security	134		134		3
Mortgage-backed Securities-Residential [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,884		$ 1,884
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	$ 1,884		$ 1,884
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	$ 55,346		$ 55,346		499
Less than 12 months, unrealized losses	$ 1,071		$ 1,071		$ 4
Less than 12 months, number of securities | Security	24		24		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	$ 55,346		$ 55,346		$ 499
Total, unrealized losses	$ 1,071		$ 1,071		$ 4
Total, number of securities | Security	24		24		4
Other Securities [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 962		$ 962
Less than 12 months, unrealized losses	$ 16		$ 16
Less than 12 months, number of securities | Security	1		1
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	$ 1,036		$ 1,036
Total, unrealized losses	$ 17		$ 17		$ 0
Total, number of securities | Security	2		2