Securities (Details) $ in Thousands	12 Months Ended
Jun. 30, 2019 USD ($) Category	Jun. 30, 2018 USD ($)
Securities [Abstract]
Number of categories utilized under risk management approach of diversified investing \| Category	3
Available-for-sale debt securities [Abstract]
Amortized cost	$ 121,602	$ 120,947
Gross unrealized gains	1,146	299
Gross unrealized losses	20	440
Estimated fair value	122,728	120,806
Held-to-maturity securities [Abstract]
Amortized cost	304,208	274,550
Gross unrealized gains	9,484	3,313
Gross unrealized losses	79	3,686
Estimated fair value	313,613	274,177
Total Securities [Abstract]
Amortized cost	425,810	395,497
Gross unrealized gains	10,630	3,612
Gross unrealized losses	99	4,126
Estimated fair value	436,341	394,983
U.S. Government Sponsored Enterprises [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	5,522	5,543
Gross unrealized gains	31	18
Gross unrealized losses	0	30
Estimated fair value	5,553	5,531
Held-to-maturity securities [Abstract]
Amortized cost	9,249	9,245
Gross unrealized gains	1	0
Gross unrealized losses	14	278
Estimated fair value	9,236	8,967
State and Political Subdivisions [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	95,782	92,052
Gross unrealized gains	788	204
Gross unrealized losses	0	1
Estimated fair value	96,570	92,255
Held-to-maturity securities [Abstract]
Amortized cost	152,358	136,335
Gross unrealized gains	6,212	3,091
Gross unrealized losses	23	532
Estimated fair value	158,547	138,894
Mortgage-backed Securities-Residential [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	2,634	3,332
Gross unrealized gains	31	13
Gross unrealized losses	20	98
Estimated fair value	2,645	3,247
Held-to-maturity securities [Abstract]
Amortized cost	4,570	6,472
Gross unrealized gains	97	72
Gross unrealized losses	0	7
Estimated fair value	4,667	6,537
Mortgage-backed Securities-Multi-Family [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	16,151	18,249
Gross unrealized gains	259	64
Gross unrealized losses	0	244
Estimated fair value	16,410	18,069
Held-to-maturity securities [Abstract]
Amortized cost	134,970	118,780
Gross unrealized gains	3,122	123
Gross unrealized losses	17	2,845
Estimated fair value	138,075	116,058
Corporate Debt Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	1,513	1,771
Gross unrealized gains	37	0
Gross unrealized losses	0	67
Estimated fair value	1,550	1,704
Held-to-maturity securities [Abstract]
Amortized cost	1,478	1,466
Gross unrealized gains	18	11
Gross unrealized losses	25	9
Estimated fair value	1,471	1,468
Other Securities [Member]
Held-to-maturity securities [Abstract]
Amortized cost	1,583	2,252
Gross unrealized gains	34	16
Gross unrealized losses	0	15
Estimated fair value	$ 1,617	$ 2,253

Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost.

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount of investment in debt security measured at amortized cost (held-to-maturity).

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