Income Taxes - Reconciliation of Statutory and Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Income tax (expense) benefit computed at the statutory federal rate:	$ (392)	$ (1,154)
Return to provision adjustments	(2)	3
Depletion in excess of tax basis	59	114
State income taxes, net of federal tax benefit	(548)	(458)
Permanent differences related to stock-based compensation and other	(58)	80
State valuation allowance	140
Marginal well credit	408
Other	(3)	(2)
Income tax (expense) benefit	$ (396)	$ (1,417)
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Income tax (expense) benefit computed at the statutory federal rate:	21.00%	21.00%
Return to provision adjustments	0.10%	(0.10%)
Depletion in excess of tax basis	(3.20%)	(2.10%)
State income taxes, net of federal tax benefit	29.30%	8.40%
Permanent differences related to stock-based compensation and other	3.10%	(1.50%)
State valuation allowance	(7.50%)
Marginal well credit	(21.80%)
Other	0.20%	0.10%
Income tax (expense) benefit	21.20%	25.80%