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Income Taxes - Reconciliation of Statutory and Income Tax Expense (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Effective Income Tax Rate Reconciliation, Amount [Abstract]    
Income tax (expense) benefit computed at the statutory federal rate: $ (9,511) $ (8,640)
Depletion in excess of tax basis 78 190
State income taxes, net of federal tax benefit (734) (1,020)
Permanent differences related to stock-based compensation and other 96 3
Federal valuation allowance   623
EOR credit benefit   377
Other (1) (46)
Income tax (expense) benefit $ (10,072) $ (8,513)
Effective Income Tax Rate Reconciliation, Percent [Abstract]    
Income tax (expense) benefit computed at the statutory federal rate: 21.00% 21.00%
Depletion in excess of tax basis (0.20%) (0.50%)
State income taxes, net of federal tax benefit 1.60% 2.50%
Permanent differences related to stock-based compensation and other (0.20%)  
Federal valuation allowance   (1.50%)
EOR credit benefit   (0.90%)
Other   0.10%
Income tax (expense) benefit 22.20% 20.70%