Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jun. 30, 2018
Available-for-sale debt securities [Abstract]
Amortized cost	$ 103,610	$ 120,947
Gross unrealized gains	477	299
Gross unrealized losses	79	440
Estimated fair value	104,008	120,806
Held-to-maturity securities [Abstract]
Amortized cost	291,456	274,550
Gross unrealized gains	5,666	3,313
Gross unrealized losses	500	3,686
Estimated fair value	296,622	274,177
Total Securities [Abstract]
Amortized cost	395,066	395,497
Gross unrealized gains	6,143	3,612
Gross unrealized losses	579	4,126
Estimated fair value	400,630	394,983
U.S. Government Sponsored Enterprises [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	5,528	5,543
Gross unrealized gains	19	18
Gross unrealized losses	0	30
Estimated fair value	5,547	5,531
Held-to-maturity securities [Abstract]
Amortized cost	9,248	9,245
Gross unrealized gains	0	0
Gross unrealized losses	50	278
Estimated fair value	9,198	8,967
State and Political Subdivisions [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	77,075	92,052
Gross unrealized gains	291	204
Gross unrealized losses	0	1
Estimated fair value	77,366	92,255
Held-to-maturity securities [Abstract]
Amortized cost	144,208	136,335
Gross unrealized gains	4,526	3,091
Gross unrealized losses	119	532
Estimated fair value	148,615	138,894
Mortgage-backed Securities-Residential [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	2,795	3,332
Gross unrealized gains	14	13
Gross unrealized losses	46	98
Estimated fair value	2,763	3,247
Held-to-maturity securities [Abstract]
Amortized cost	4,861	6,472
Gross unrealized gains	62	72
Gross unrealized losses	0	7
Estimated fair value	4,923	6,537
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	16,448	18,249
Gross unrealized gains	153	64
Gross unrealized losses	26	244
Estimated fair value	16,575	18,069
Held-to-maturity securities [Abstract]
Amortized cost	130,033	118,780
Gross unrealized gains	1,048	123
Gross unrealized losses	314	2,845
Estimated fair value	130,767	116,058
Corporate Debt Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	1,764	1,771
Gross unrealized gains	0	0
Gross unrealized losses	7	67
Estimated fair value	1,757	1,704
Held-to-maturity securities [Abstract]
Amortized cost	1,475	1,466
Gross unrealized gains	6	11
Gross unrealized losses	15	9
Estimated fair value	1,466	1,468
Other Securities [Member]
Held-to-maturity securities [Abstract]
Amortized cost	1,631	2,252
Gross unrealized gains	24	16
Gross unrealized losses	2	15
Estimated fair value	$ 1,653	$ 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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