Securities (Details) $ in Thousands	12 Months Ended
	Jun. 30, 2017 USD ($) Category	Jun. 30, 2016 USD ($)
Securities [Abstract]
Number of categories utilized under risk management approach of diversified investing | Category	3
Available-for-sale debt securities [Abstract]
Amortized cost	$ 90,429	$ 98,065
Gross unrealized gains	962	1,911
Gross unrealized losses	92	5
Estimated fair value	91,299	99,971
Available-for-sale equity securities and other [Abstract]
Amortized cost	62	62
Gross unrealized gains	122	90
Gross unrealized losses	0	0
Estimated fair value	184	152
Available-for-sale securities [Abstract]
Amortized cost	90,491	98,127
Gross unrealized gains	1,084	2,001
Gross unrealized losses	92	5
Estimated fair value	91,483	100,123
Held-to-maturity securities [Abstract]
Amortized cost	223,830	204,935
Gross unrealized gains	4,988	9,130
Gross unrealized losses	366	7
Estimated fair value	228,452	214,058
Total Securities [Abstract]
Amortized cost	314,321	303,062
Gross unrealized gains	6,072	11,131
Gross unrealized losses	458	12
Estimated fair value	319,935	314,181
U.S. Government Sponsored Enterprises [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	4,566	4,587
Gross unrealized gains	151	304
Gross unrealized losses	0	0
Estimated fair value	4,717	4,891
State and Political Subdivisions [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	57,885	60,491
Gross unrealized gains	227	8
Gross unrealized losses	0	0
Estimated fair value	58,112	60,499
Mortgage-backed Securities-Residential [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	4,868	6,360
Gross unrealized gains	72	185
Gross unrealized losses	27	5
Estimated fair value	4,913	6,540
Mortgage-backed Securities-Multi-Family [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	20,344	22,594
Gross unrealized gains	483	1,285
Gross unrealized losses	62	0
Estimated fair value	20,765	23,879
Asset-Backed Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	1	5
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	1	5
Corporate Debt Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	2,765	4,028
Gross unrealized gains	29	129
Gross unrealized losses	3	0
Estimated fair value	2,791	4,157
U.S. Government Sponsored Enterprises [Member]
Held-to-maturity securities [Abstract]
Amortized cost	6,000	2,000
Gross unrealized gains	0	32
Gross unrealized losses	53	0
Estimated fair value	5,947	2,032
State and Political Subdivisions [Member]
Held-to-maturity securities [Abstract]
Amortized cost	115,805	99,040
Gross unrealized gains	3,434	5,003
Gross unrealized losses	95	3
Estimated fair value	119,144	104,040
Mortgage-backed Securities-Residential [Member]
Held-to-maturity securities [Abstract]
Amortized cost	10,798	13,543
Gross unrealized gains	274	606
Gross unrealized losses	2	0
Estimated fair value	11,070	14,149
Mortgage-backed Securities-Multi-Family [Member]
Held-to-maturity securities [Abstract]
Amortized cost	88,702	87,204
Gross unrealized gains	1,259	3,471
Gross unrealized losses	199	4
Estimated fair value	89,762	90,671
Corporate Debt Securities [Member]
Held-to-maturity securities [Abstract]
Amortized cost	1,000	1,000
Gross unrealized gains	0	0
Gross unrealized losses	5	0
Estimated fair value	995	1,000
Other Securities [Member]
Held-to-maturity securities [Abstract]
Amortized cost	1,525	2,148
Gross unrealized gains	21	18
Gross unrealized losses	12	0
Estimated fair value	$ 1,534	$ 2,166