Securities, Components of Securities (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2022 USD ($) Category	Jun. 30, 2022 USD ($)
Available-for-sale debt securities [Abstract]
Amortized cost	$ 366,198	$ 431,625
Gross unrealized gains	40	374
Gross unrealized losses	32,635	23,937
Estimated fair value	333,603	408,062
Held-to-maturity securities [Abstract]
Amortized cost	752,869	761,852
Gross unrealized gains	1,439	2,779
Gross unrealized losses	80,872	54,178
Estimated fair value	673,436	710,453
Total Securities [Abstract]
Amortized cost	1,119,067	1,193,477
Gross unrealized gains	1,479	3,153
Gross unrealized losses	113,507	78,115
Estimated fair value	$ 1,007,039	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	$ 13,064	13,066
Gross unrealized gains	0	0
Gross unrealized losses	2,400	1,747
Estimated fair value	10,664	11,319
U.S. Treasury Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	20,131	20,158
Gross unrealized gains	0	0
Gross unrealized losses	2,505	1,731
Estimated fair value	17,626	18,427
Held-to-maturity securities [Abstract]
Amortized cost	33,644	33,623
Gross unrealized gains	0	0
Gross unrealized losses	2,701	1,643
Estimated fair value	30,943	31,980
State and Political Subdivisions [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	189,759	247,978
Gross unrealized gains	40	374
Gross unrealized losses	895	276
Estimated fair value	188,904	248,076
Held-to-maturity securities [Abstract]
Amortized cost	493,463	493,897
Gross unrealized gains	1,437	2,760
Gross unrealized losses	52,136	35,747
Estimated fair value	442,764	460,910
Mortgage-backed Securities-Residential [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	31,994	33,186
Gross unrealized gains	0	0
Gross unrealized losses	4,826	3,289
Estimated fair value	27,168	29,897
Held-to-maturity securities [Abstract]
Amortized cost	40,901	42,461
Gross unrealized gains	0	1
Gross unrealized losses	4,023	2,242
Estimated fair value	36,878	40,220
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	93,359	99,353
Gross unrealized gains	0	0
Gross unrealized losses	20,123	15,644
Estimated fair value	73,236	83,709
Held-to-maturity securities [Abstract]
Amortized cost	164,925	171,921
Gross unrealized gains	0	2
Gross unrealized losses	20,875	13,895
Estimated fair value	144,050	158,028
Corporate Debt Securities [Member]
Available-for-sale debt securities [Abstract]
Amortized cost	17,891	17,884
Gross unrealized gains	0	0
Gross unrealized losses	1,886	1,250
Estimated fair value	16,005	16,634
Held-to-maturity securities [Abstract]
Amortized cost	19,895	19,900
Gross unrealized gains	2	16
Gross unrealized losses	1,137	651
Estimated fair value	18,760	19,265
Other Securities [Member]
Held-to-maturity securities [Abstract]
Amortized cost	41	50
Gross unrealized gains	0	0
Gross unrealized losses	0	0
Estimated fair value	$ 41	$ 50