Income Taxes - Reconciliation to Federal Statutory Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Statutory tax rate	21.00%	21.00%	21.00%
Income tax benefit at statutory rate	$ (811)	$ (7,216)	$ (389)
State income tax expense (benefit) (net of federal tax benefit)	933	2,407	(754)
Valuation allowance	(3,223)	3,788	1,767
Change in tax rate	(26)	(111)	(210)
Post-retirement medical plan and other offset in OCI	0	(467)	0
Other (net)	3,141	1,274	(290)
Income tax expense (benefit)	$ 14	$ (325)	$ 124