Employee Benefit Plans - Other Changes in Plan Assets and Benefit Obligations Recognized in OCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Change in projected benefit obligation
Projected benefit obligation	$ 94,866	$ 99,207	$ 106,459
Interest cost	4,817	4,624	3,391
Actuarial (gains) losses	(2,429)	(5,140)
Benefits paid	(6,729)	(6,736)
Change in plan assets
Fair value of plan assets at the beginning of the year	79,624	78,098
Employer contributions	2,332	2,082
Benefits paid	(6,729)	(6,736)
Fair value of plan assets at the end of the year	82,935	79,624	78,098
Projected benefit obligation	94,866	99,207	106,459
Funded status at end of year (underfunded)	(11,931)	(19,583)
Amounts recognized in consolidated balance sheets
Noncurrent liabilities	(12,109)	(19,583)
Other Postretirement Benefits Plan
Change in projected benefit obligation
Projected benefit obligation	859	826	844
Service cost	0	0	0
Interest cost	42	39	27
Actuarial (gains) losses	(9)	(57)
Benefits paid	0	0
Change in plan assets
Fair value of plan assets at the beginning of the year	0	0
Employer contributions		0	0
Benefits paid		0	0
Fair value of plan assets at the end of the year	0	0	0
Projected benefit obligation	859	826	$ 844
Funded status at end of year (underfunded)	(859)	(826)
Amounts recognized in consolidated balance sheets
Current liabilities	(69)	(61)
Noncurrent liabilities	(790)	(765)
Total	$ (859)	$ (826)