Securities, Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2018 USD ($) Security	Jun. 30, 2017 USD ($) Security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 16,110	$ 8,412
Less than 12 months, unrealized losses	$ 438	$ 92
Less than 12 months, number of securities | Security	21	7
More than 12 months, fair value	$ 254	$ 0
More than 12 months, unrealized losses	$ 2	$ 0
More than 12 months, number of securities | Security	1	0
Total, fair value	$ 16,364	$ 8,412
Total, unrealized losses	$ 440	$ 92
Total, number of securities | Security	22	7
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 139,440	$ 42,072
Less than 12 months, unrealized losses	$ 3,277	$ 346
Less than 12 months, number of securities | Security	218	84
More than 12 months, fair value	$ 12,774	$ 588
More than 12 months, unrealized losses	$ 409	$ 20
More than 12 months, number of securities | Security	39	7
Total, fair value	$ 152,214	$ 42,660
Total, unrealized losses	$ 3,686	$ 366
Total, number of securities | Security	257	91
Total Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 155,550	$ 50,484
Less than 12 months, unrealized losses	$ 3,715	$ 438
Less than 12 months, number of securities | Security	239	91
More than 12 months, fair value	$ 13,028	$ 588
More than 12 months, unrealized losses	$ 411	$ 20
More than 12 months, number of securities | Security	40	7
Total, fair value	$ 168,578	$ 51,072
Total, unrealized losses	$ 4,126	$ 458
Total, number of securities | Security	279	98
Available for sale securities transferred at fair value to held to maturity	$ 0	$ 0
Gross realized gains on sale of available-for-sale securities	0	0
Other-than-temporary impairment losses	0	0
U.S. Government Sponsored Enterprises [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	969
Less than 12 months, unrealized losses	$ 30
Less than 12 months, number of securities | Security	1
More than 12 months, fair value	$ 0
More than 12 months, unrealized losses	$ 0
More than 12 months, number of securities | Security	0
Total, fair value	$ 969
Total, unrealized losses	$ 30
Total, number of securities | Security	1
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 7,018	5,947
Less than 12 months, unrealized losses	$ 227	$ 53
Less than 12 months, number of securities | Security	1	2
More than 12 months, fair value	$ 1,949	$ 0
More than 12 months, unrealized losses	$ 51	$ 0
More than 12 months, number of securities | Security	1	0
Total, fair value	$ 8,967	$ 5,947
Total, unrealized losses	$ 278	$ 53
Total, number of securities | Security	2	2
State and Political Subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 2,094
Less than 12 months, unrealized losses	$ 1
Less than 12 months, number of securities | Security	4
More than 12 months, fair value	$ 0
More than 12 months, unrealized losses	$ 0
More than 12 months, number of securities | Security	0
Total, fair value	$ 2,094
Total, unrealized losses	$ 1
Total, number of securities | Security	4
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 34,743	$ 8,976
Less than 12 months, unrealized losses	$ 434	$ 76
Less than 12 months, number of securities | Security	167	64
More than 12 months, fair value	$ 4,352	$ 514
More than 12 months, unrealized losses	$ 98	$ 19
More than 12 months, number of securities | Security	34	6
Total, fair value	$ 39,095	$ 9,490
Total, unrealized losses	$ 532	$ 95
Total, number of securities | Security	201	70
Mortgage-backed Securities-Residential [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 2,420	$ 1,164
Less than 12 months, unrealized losses	$ 98	$ 27
Less than 12 months, number of securities | Security	3	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	$ 2,420	$ 1,164
Total, unrealized losses	$ 98	$ 27
Total, number of securities | Security	3	1
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,403	$ 1,864
Less than 12 months, unrealized losses	$ 7	$ 2
Less than 12 months, number of securities | Security	3	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	$ 1,403	$ 1,864
Total, unrealized losses	$ 7	$ 2
Total, number of securities | Security	3	1
Mortgage-backed Securities-Multi-Family [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 9,177	$ 6,488
Less than 12 months, unrealized losses	$ 244	$ 62
Less than 12 months, number of securities | Security	7	4
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	$ 9,177	$ 6,488
Total, unrealized losses	$ 244	$ 62
Total, number of securities | Security	7	4
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 94,927	$ 23,823
Less than 12 months, unrealized losses	$ 2,586	$ 199
Less than 12 months, number of securities | Security	45	15
More than 12 months, fair value	$ 6,398	$ 0
More than 12 months, unrealized losses	$ 259	$ 0
More than 12 months, number of securities | Security	3	0
Total, fair value	$ 101,325	$ 23,823
Total, unrealized losses	$ 2,845	$ 199
Total, number of securities | Security	48	15
Corporate Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,450	$ 760
Less than 12 months, unrealized losses	$ 65	$ 3
Less than 12 months, number of securities | Security	6	2
More than 12 months, fair value	$ 254	$ 0
More than 12 months, unrealized losses	$ 2	$ 0
More than 12 months, number of securities | Security	1	0
Total, fair value	$ 1,704	$ 760
Total, unrealized losses	$ 67	$ 3
Total, number of securities | Security	7	2
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 457	$ 995
Less than 12 months, unrealized losses	$ 9	$ 5
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	$ 457	$ 995
Total, unrealized losses	$ 9	$ 5
Total, number of securities | Security	1	1
Other Securities [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 892	$ 467
Less than 12 months, unrealized losses	$ 14	$ 11
Less than 12 months, number of securities | Security	1	1
More than 12 months, fair value	$ 75	$ 74
More than 12 months, unrealized losses	$ 1	$ 1
More than 12 months, number of securities | Security	1	1
Total, fair value	$ 967	$ 541
Total, unrealized losses	$ 15	$ 12
Total, number of securities | Security	2	2