Securities, Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2022 USD ($) Security	Sep. 30, 2021 USD ($)	Jun. 30, 2022 USD ($) Security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 295,357		$ 288,207
More than 12 months, fair value	15,998		12,078
Total, fair value	311,355		300,285
Less than 12 months, unrealized losses	27,159		21,161
More than 12 months, unrealized losses	5,476		2,776
Total, unrealized losses	$ 32,635		$ 23,937
Less than 12 months, number of securities | Security	212		233
More than 12 months, number of securities | Security	9		5
Total, number of securities | Security	221		238
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 609,169		$ 592,159
More than 12 months, fair value	2,601		735
Total, fair value	611,770		592,894
Less than 12 months, unrealized losses	79,960		53,995
More than 12 months, unrealized losses	912		183
Total, unrealized losses	$ 80,872		$ 54,178
Less than 12 months, number of securities | Security	4,811		2,477
More than 12 months, number of securities | Security	27		5
Total, number of securities | Security	4,838		2,482
Total Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 904,526		$ 880,366
More than 12 months, fair value	18,599		12,813
Total, fair value	923,125		893,179
Less than 12 months, unrealized losses	107,119		75,156
More than 12 months, unrealized losses	6,388		2,959
Total, unrealized losses	$ 113,507		$ 78,115
Less than 12 months, number of securities | Security	5,023		2,710
More than 12 months, number of securities | Security	36		10
Total, number of securities | Security	5,059		2,720
Available for sale securities transferred at fair value to held to maturity	$ 0	$ 0
Proceeds from sale of available-for-sale securities	0	0
Gross realized gains (losses) on sale of available-for-sale securities	0	0
Other-than-temporary impairment losses	0	$ 0
U.S. Government Sponsored Enterprises [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	9,087		$ 11,319
More than 12 months, fair value	1,577		0
Total, fair value	10,664		11,319
Less than 12 months, unrealized losses	1,977		1,747
More than 12 months, unrealized losses	423		0
Total, unrealized losses	$ 2,400		$ 1,747
Less than 12 months, number of securities | Security	4		5
More than 12 months, number of securities | Security	1		0
Total, number of securities | Security	5		5
U.S. Treasury Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 17,626		$ 18,427
More than 12 months, fair value	0		0
Total, fair value	17,626		18,427
Less than 12 months, unrealized losses	2,505		1,731
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 2,505		$ 1,731
Less than 12 months, number of securities | Security	8		8
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	8		8
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 30,943		$ 31,980
More than 12 months, fair value	0		0
Total, fair value	30,943		31,980
Less than 12 months, unrealized losses	2,701		1,643
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 2,701		$ 1,643
Less than 12 months, number of securities | Security	9		9
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	9		9
State and Political Subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 166,656		$ 140,324
More than 12 months, fair value	0		0
Total, fair value	166,656		140,324
Less than 12 months, unrealized losses	895		276
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 895		$ 276
Less than 12 months, number of securities | Security	130		148
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	130		148
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 386,038		$ 353,837
More than 12 months, fair value	2,601		735
Total, fair value	388,639		354,572
Less than 12 months, unrealized losses	51,224		35,564
More than 12 months, unrealized losses	912		183
Total, unrealized losses	$ 52,136		$ 35,747
Less than 12 months, number of securities | Security	4,691		2,362
More than 12 months, number of securities | Security	27		5
Total, number of securities | Security	4,718		2,367
Mortgage-backed Securities-Residential [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 25,817		$ 29,872
More than 12 months, fair value	1,351		0
Total, fair value	27,168		29,872
Less than 12 months, unrealized losses	4,555		3,289
More than 12 months, unrealized losses	271		0
Total, unrealized losses	$ 4,826		$ 3,289
Less than 12 months, number of securities | Security	29		27
More than 12 months, number of securities | Security	1		0
Total, number of securities | Security	30		27
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 36,878		$ 39,865
More than 12 months, fair value	0		0
Total, fair value	36,878		39,865
Less than 12 months, unrealized losses	4,023		2,242
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 4,023		$ 2,242
Less than 12 months, number of securities | Security	33		27
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	33		27
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 60,166		$ 71,631
More than 12 months, fair value	13,070		12,078
Total, fair value	73,236		83,709
Less than 12 months, unrealized losses	15,341		12,868
More than 12 months, unrealized losses	4,782		2,776
Total, unrealized losses	$ 20,123		$ 15,644
Less than 12 months, number of securities | Security	25		29
More than 12 months, number of securities | Security	7		5
Total, number of securities | Security	32		34
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 144,050		$ 155,726
More than 12 months, fair value	0		0
Total, fair value	144,050		155,726
Less than 12 months, unrealized losses	20,875		13,895
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 20,875		$ 13,895
Less than 12 months, number of securities | Security	66		68
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	66		68
Corporate Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 16,005		$ 16,634
More than 12 months, fair value	0		0
Total, fair value	16,005		16,634
Less than 12 months, unrealized losses	1,886		1,250
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 1,886		$ 1,250
Less than 12 months, number of securities | Security	16		16
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	16		16
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 11,260		$ 10,751
More than 12 months, fair value	0		0
Total, fair value	11,260		10,751
Less than 12 months, unrealized losses	1,137		651
More than 12 months, unrealized losses	0		0
Total, unrealized losses	$ 1,137		$ 651
Less than 12 months, number of securities | Security	12		11
More than 12 months, number of securities | Security	0		0
Total, number of securities | Security	12		11