Securities, Components of Securities (Details) $ in Thousands	6 Months Ended
	Dec. 31, 2022 USD ($) Category	Jun. 30, 2022 USD ($)
Available-for-sale debt securities [Abstract]
Amortized cost	$ 365,016	$ 431,625
Gross unrealized gains	546	374
Gross unrealized losses	30,444	23,937
Estimated fair value	335,118	408,062
Held-to-maturity securities [Abstract]
Amortized cost	742,470	761,852
Gross unrealized gains	3,481	2,779
Gross unrealized losses	63,741	54,178
Estimated fair value	682,210	710,453
Total Securities [Abstract]
Amortized cost	1,107,486	1,193,477
Gross unrealized gains	4,027	3,153
Gross unrealized losses	94,185	78,115
Estimated fair value	$ 1,017,328	1,118,515
Number of categories utilized under risk management approach of diversified investing | Category	3
U.S. Government Sponsored Enterprises [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	$ 13,061	13,066
Gross unrealized gains	0	0
Gross unrealized losses	2,332	1,747
Estimated fair value	10,729	11,319
U.S. Treasury Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	18,176	20,158
Gross unrealized gains	0	0
Gross unrealized losses	2,070	1,731
Estimated fair value	16,106	18,427
Held-to-maturity securities [Abstract]
Amortized cost	33,664	33,623
Gross unrealized gains	0	0
Gross unrealized losses	2,566	1,643
Estimated fair value	31,098	31,980
State and Political Subdivisions [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	193,612	247,978
Gross unrealized gains	546	374
Gross unrealized losses	261	276
Estimated fair value	193,897	248,076
Held-to-maturity securities [Abstract]
Amortized cost	487,495	493,897
Gross unrealized gains	3,479	2,760
Gross unrealized losses	35,181	35,747
Estimated fair value	455,793	460,910
Mortgage-backed Securities-Residential [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	31,025	33,186
Gross unrealized gains	0	0
Gross unrealized losses	4,329	3,289
Estimated fair value	26,696	29,897
Held-to-maturity securities [Abstract]
Amortized cost	39,530	42,461
Gross unrealized gains	0	1
Gross unrealized losses	3,721	2,242
Estimated fair value	35,809	40,220
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	91,243	99,353
Gross unrealized gains	0	0
Gross unrealized losses	19,612	15,644
Estimated fair value	71,631	83,709
Held-to-maturity securities [Abstract]
Amortized cost	160,100	171,921
Gross unrealized gains	0	2
Gross unrealized losses	20,795	13,895
Estimated fair value	139,305	158,028
Corporate Debt Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	17,899	17,884
Gross unrealized gains	0	0
Gross unrealized losses	1,840	1,250
Estimated fair value	16,059	16,634
Held-to-maturity securities [Abstract]
Amortized cost	21,641	19,900
Gross unrealized gains	2	16
Gross unrealized losses	1,478	651
Estimated fair value	20,165	19,265
Other Securities [Member]
Held-to-maturity securities [Abstract]
Amortized cost	40	50
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	$ 40	$ 50