Securities, Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2024 USD ($) Security	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($) Security	Mar. 31, 2023 USD ($) Security	Jun. 30, 2023 USD ($) Security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 29,290		$ 29,290		$ 6,268
More than 12 months, fair value	139,395		139,395		136,936
Total, fair value	168,685		168,685		143,204
Less than 12 months, unrealized losses	318		318		308
More than 12 months, unrealized losses	27,124		27,124		28,382
Total, unrealized losses	$ 27,442		$ 27,442		$ 28,690
Less than 12 months, number of securities | Security	5		5		12
More than 12 months, number of securities | Security	85		85		78
Total, number of securities | Security	90		90		90
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 13,610		$ 13,610		$ 57,992
More than 12 months, fair value	505,449		505,449		495,655
Total, fair value	519,059		519,059		553,647
Less than 12 months, unrealized losses	46		46		2,897
More than 12 months, unrealized losses	59,857		59,857		57,578
Total, unrealized losses	$ 59,903		$ 59,903		$ 60,475
Less than 12 months, number of securities | Security	132		132		471
More than 12 months, number of securities | Security	2,270		2,270		2,108
Total, number of securities | Security	2,402		2,402		2,579
Total Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 42,900		$ 42,900		$ 64,260
More than 12 months, fair value	644,844		644,844		632,591
Total, fair value	687,744		687,744		696,851
Less than 12 months, unrealized losses	364		364		3,205
More than 12 months, unrealized losses	86,981		86,981		85,960
Total, unrealized losses	$ 87,345		$ 87,345		$ 89,165
Less than 12 months, number of securities | Security	137		137		483
More than 12 months, number of securities | Security	2,355		2,355		2,186
Total, number of securities | Security	2,492		2,492		2,669
Available for sale securities transferred at fair value to held to maturity	$ 0	$ 0	$ 0	$ 0
Proceeds from sale of available-for-sale securities	0	0	0	1,675
Gross realized gains (losses) on sale of available-for-sale securities	0	$ 0	0	$ (251)
Number of sales of available-for-sale security | Security				1
U.S. Government Sponsored Enterprises [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	0		0		$ 0
More than 12 months, fair value	10,950		10,950		10,823
Total, fair value	10,950		10,950		10,823
Less than 12 months, unrealized losses	0		0		0
More than 12 months, unrealized losses	2,095		2,095		2,231
Total, unrealized losses	$ 2,095		$ 2,095		$ 2,231
Less than 12 months, number of securities | Security	0		0		0
More than 12 months, number of securities | Security	5		5		5
Total, number of securities | Security	5		5		5
U.S. Treasury Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 27,318		$ 27,318		$ 761
More than 12 months, fair value	15,815		15,815		15,739
Total, fair value	43,133		43,133		16,500
Less than 12 months, unrealized losses	313		313		57
More than 12 months, unrealized losses	1,629		1,629		1,792
Total, unrealized losses	$ 1,942		$ 1,942		$ 1,849
Less than 12 months, number of securities | Security	4		4		2
More than 12 months, number of securities | Security	6		6		6
Total, number of securities | Security	10		10		8
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 0		$ 0		$ 0
More than 12 months, fair value	31,918		31,918		31,267
Total, fair value	31,918		31,918		31,267
Less than 12 months, unrealized losses	0		0		0
More than 12 months, unrealized losses	1,849		1,849		2,438
Total, unrealized losses	$ 1,849		$ 1,849		$ 2,438
Less than 12 months, number of securities | Security	0		0		0
More than 12 months, number of securities | Security	8		8		8
Total, number of securities | Security	8		8		8
State and Political Subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 0		$ 0		$ 0
More than 12 months, fair value	62		62		82
Total, fair value	62		62		82
Less than 12 months, unrealized losses	0		0		0
More than 12 months, unrealized losses	1		1		2
Total, unrealized losses	$ 1		$ 1		$ 2
Less than 12 months, number of securities | Security	0		0		0
More than 12 months, number of securities | Security	1		1		1
Total, number of securities | Security	1		1		1
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 13,610		$ 13,610		$ 40,412
More than 12 months, fair value	296,385		296,385		295,479
Total, fair value	309,995		309,995		335,891
Less than 12 months, unrealized losses	46		46		520
More than 12 months, unrealized losses	34,136		34,136		30,142
Total, unrealized losses	$ 34,182		$ 34,182		$ 30,662
Less than 12 months, number of securities | Security	131		131		448
More than 12 months, number of securities | Security	2,164		2,164		2,018
Total, number of securities | Security	2,295		2,295		2,466
Mortgage-backed Securities-Residential [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 1,972		$ 1,972		$ 476
More than 12 months, fair value	23,414		23,414		25,125
Total, fair value	25,386		25,386		25,601
Less than 12 months, unrealized losses	5		5		29
More than 12 months, unrealized losses	3,924		3,924		3,956
Total, unrealized losses	$ 3,929		$ 3,929		$ 3,985
Less than 12 months, number of securities | Security	1		1		7
More than 12 months, number of securities | Security	26		26		21
Total, number of securities | Security	27		27		28
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 0		$ 0		$ 1,982
More than 12 months, fair value	30,628		30,628		31,579
Total, fair value	30,628		30,628		33,561
Less than 12 months, unrealized losses	0		0		120
More than 12 months, unrealized losses	3,319		3,319		3,505
Total, unrealized losses	$ 3,319		$ 3,319		$ 3,625
Less than 12 months, number of securities | Security	1		1		12
More than 12 months, number of securities | Security	28		28		18
Total, number of securities | Security	29		29		30
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 0		$ 0		$ 2,679
More than 12 months, fair value	72,517		72,517		69,407
Total, fair value	72,517		72,517		72,086
Less than 12 months, unrealized losses	0		0		182
More than 12 months, unrealized losses	18,175		18,175		18,748
Total, unrealized losses	$ 18,175		$ 18,175		$ 18,930
Less than 12 months, number of securities | Security	0		0		1
More than 12 months, number of securities | Security	31		31		30
Total, number of securities | Security	31		31		31
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 0		$ 0		$ 5,362
More than 12 months, fair value	127,253		127,253		129,360
Total, fair value	127,253		127,253		134,722
Less than 12 months, unrealized losses	0		0		245
More than 12 months, unrealized losses	17,981		17,981		20,079
Total, unrealized losses	$ 17,981		$ 17,981		$ 20,324
Less than 12 months, number of securities | Security	0		0		2
More than 12 months, number of securities | Security	52		52		54
Total, number of securities | Security	52		52		56
Corporate Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 0		$ 0		$ 2,352
More than 12 months, fair value	16,637		16,637		15,760
Total, fair value	16,637		16,637		18,112
Less than 12 months, unrealized losses	0		0		40
More than 12 months, unrealized losses	1,300		1,300		1,653
Total, unrealized losses	$ 1,300		$ 1,300		$ 1,693
Less than 12 months, number of securities | Security	0		0		2
More than 12 months, number of securities | Security	16		16		15
Total, number of securities | Security	16		16		17
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 0		$ 0		$ 10,236
More than 12 months, fair value	19,265		19,265		7,970
Total, fair value	19,265		19,265		18,206
Less than 12 months, unrealized losses	0		0		2,012
More than 12 months, unrealized losses	2,572		2,572		1,414
Total, unrealized losses	$ 2,572		$ 2,572		$ 3,426
Less than 12 months, number of securities | Security	0		0		9
More than 12 months, number of securities | Security	18		18		10
Total, number of securities | Security	18		18		19