Securities, Securities in Continuous Unrealized Loss Position (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2023 USD ($) Security	Mar. 31, 2022 USD ($)	Mar. 31, 2023 USD ($) Security	Mar. 31, 2022 USD ($)	Jun. 30, 2022 USD ($) Security
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 28,586		$ 28,586		$ 288,207
More than 12 months, fair value	140,385		140,385		12,078
Total, fair value	168,971		168,971		300,285
Less than 12 months, unrealized losses	202		202		21,161
More than 12 months, unrealized losses	26,338		26,338		2,776
Total, unrealized losses	$ 26,540		$ 26,540		$ 23,937
Less than 12 months, number of securities | Security	21		21		233
More than 12 months, number of securities | Security	77		77		5
Total, number of securities | Security	98		98		238
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 248,300		$ 248,300		$ 592,159
More than 12 months, fair value	328,007		328,007		735
Total, fair value	576,307		576,307		592,894
Less than 12 months, unrealized losses	11,976		11,976		53,995
More than 12 months, unrealized losses	43,195		43,195		183
Total, unrealized losses	$ 55,171		$ 55,171		$ 54,178
Less than 12 months, number of securities | Security	3,142		3,142		2,477
More than 12 months, number of securities | Security	893		893		5
Total, number of securities | Security	4,035		4,035		2,482
Total Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 276,886		$ 276,886		$ 880,366
More than 12 months, fair value	468,392		468,392		12,813
Total, fair value	745,278		745,278		893,179
Less than 12 months, unrealized losses	12,178		12,178		75,156
More than 12 months, unrealized losses	69,533		69,533		2,959
Total, unrealized losses	$ 81,711		$ 81,711		$ 78,115
Less than 12 months, number of securities | Security	3,163		3,163		2,710
More than 12 months, number of securities | Security	970		970		10
Total, number of securities | Security	4,133		4,133		2,720
Available for sale securities transferred at fair value to held to maturity	$ 0	$ 0	$ 0	$ 0
Gross realized gains (losses) on sale of available-for-sale securities	0	0	$ (251)	0
Number of sales of available-for-sale security | Security			1
Proceeds from sale of available-for-sale securities	0	0	$ 1,675	0
Other-than-temporary impairment losses	0	$ 0	0	$ 0
U.S. Government Sponsored Enterprises [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	0		0		$ 11,319
More than 12 months, fair value	11,004		11,004		0
Total, fair value	11,004		11,004		11,319
Less than 12 months, unrealized losses	0		0		1,747
More than 12 months, unrealized losses	2,054		2,054		0
Total, unrealized losses	$ 2,054		$ 2,054		$ 1,747
Less than 12 months, number of securities | Security	0		0		5
More than 12 months, number of securities | Security	5		5		0
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	$ 229		$ 229		$ 18,427
More than 12 months, fair value	16,436		16,436		0
Total, fair value	16,665		16,665		18,427
Less than 12 months, unrealized losses	1		1		1,731
More than 12 months, unrealized losses	1,711		1,711		0
Total, unrealized losses	$ 1,712		$ 1,712		$ 1,731
Less than 12 months, number of securities | Security	1		1		8
More than 12 months, number of securities | Security	7		7		0
Total, number of securities | Security	8		8		8
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 0		$ 0		$ 31,980
More than 12 months, fair value	31,613		31,613		0
Total, fair value	31,613		31,613		31,980
Less than 12 months, unrealized losses	0		0		1,643
More than 12 months, unrealized losses	2,071		2,071		0
Total, unrealized losses	$ 2,071		$ 2,071		$ 1,643
Less than 12 months, number of securities | Security	0		0		9
More than 12 months, number of securities | Security	8		8		0
Total, number of securities | Security	8		8		9
State and Political Subdivisions [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 24,618		$ 24,618		$ 140,324
More than 12 months, fair value	82		82		0
Total, fair value	24,700		24,700		140,324
Less than 12 months, unrealized losses	20		20		276
More than 12 months, unrealized losses	2		2		0
Total, unrealized losses	$ 22		$ 22		$ 276
Less than 12 months, number of securities | Security	8		8		148
More than 12 months, number of securities | Security	1		1		0
Total, number of securities | Security	9		9		148
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 216,800		$ 216,800		$ 353,837
More than 12 months, fair value	132,787		132,787		735
Total, fair value	349,587		349,587		354,572
Less than 12 months, unrealized losses	9,556		9,556		35,564
More than 12 months, unrealized losses	19,495		19,495		183
Total, unrealized losses	$ 29,051		$ 29,051		$ 35,747
Less than 12 months, number of securities | Security	3,113		3,113		2,362
More than 12 months, number of securities | Security	809		809		5
Total, number of securities | Security	3,922		3,922		2,367
Mortgage-backed Securities-Residential [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 521		$ 521		$ 29,872
More than 12 months, fair value	26,013		26,013		0
Total, fair value	26,534		26,534		29,872
Less than 12 months, unrealized losses	25		25		3,289
More than 12 months, unrealized losses	3,776		3,776		0
Total, unrealized losses	$ 3,801		$ 3,801		$ 3,289
Less than 12 months, number of securities | Security	10		10		27
More than 12 months, number of securities | Security	19		19		0
Total, number of securities | Security	29		29		27
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 2,094		$ 2,094		$ 39,865
More than 12 months, fair value	33,223		33,223		0
Total, fair value	35,317		35,317		39,865
Less than 12 months, unrealized losses	90		90		2,242
More than 12 months, unrealized losses	2,999		2,999		0
Total, unrealized losses	$ 3,089		$ 3,089		$ 2,242
Less than 12 months, number of securities | Security	11		11		27
More than 12 months, number of securities | Security	18		18		0
Total, number of securities | Security	29		29		27
Mortgage-backed Securities-Multi-family [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 2,731		$ 2,731		$ 71,631
More than 12 months, fair value	70,882		70,882		12,078
Total, fair value	73,613		73,613		83,709
Less than 12 months, unrealized losses	142		142		12,868
More than 12 months, unrealized losses	17,358		17,358		2,776
Total, unrealized losses	$ 17,500		$ 17,500		$ 15,644
Less than 12 months, number of securities | Security	1		1		29
More than 12 months, number of securities | Security	30		30		5
Total, number of securities | Security	31		31		34
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 18,176		$ 18,176		$ 155,726
More than 12 months, fair value	122,651		122,651		0
Total, fair value	140,827		140,827		155,726
Less than 12 months, unrealized losses	712		712		13,895
More than 12 months, unrealized losses	17,574		17,574		0
Total, unrealized losses	$ 18,286		$ 18,286		$ 13,895
Less than 12 months, number of securities | Security	9		9		68
More than 12 months, number of securities | Security	49		49		0
Total, number of securities | Security	58		58		68
Corporate Debt Securities [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 487		$ 487		$ 16,634
More than 12 months, fair value	15,968		15,968		0
Total, fair value	16,455		16,455		16,634
Less than 12 months, unrealized losses	14		14		1,250
More than 12 months, unrealized losses	1,437		1,437		0
Total, unrealized losses	$ 1,451		$ 1,451		$ 1,250
Less than 12 months, number of securities | Security	1		1		16
More than 12 months, number of securities | Security	15		15		0
Total, number of securities | Security	16		16		16
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 months, fair value	$ 11,230		$ 11,230		$ 10,751
More than 12 months, fair value	7,733		7,733		0
Total, fair value	18,963		18,963		10,751
Less than 12 months, unrealized losses	1,618		1,618		651
More than 12 months, unrealized losses	1,056		1,056		0
Total, unrealized losses	$ 2,674		$ 2,674		$ 651
Less than 12 months, number of securities | Security	9		9		11
More than 12 months, number of securities | Security	9		9		0
Total, number of securities | Security	18		18		11