v3.26.1
Properties, Plant and Equipment, Net - Summary of Properties, Plant and Equipment (Detail) - USD ($)
$ in Thousands
Mar. 31, 2026
Jun. 30, 2025
Property, Plant and Equipment [Line Items]    
Properties, plant and equipment, Gross $ 80,139 $ 79,018
Less accumulated depreciation (40,360) (25,360)
Properties, plant and equipment, net 39,779 53,658
Land [Member]    
Property, Plant and Equipment [Line Items]    
Properties, plant and equipment, Gross $ 1,533 1,533
Property, Plant and Equipment, Depreciation Method [Extensible Enumeration] us-gaap:NoDepreciationMethodMember  
Small-scale facility - plant [Member]    
Property, Plant and Equipment [Line Items]    
Properties, plant and equipment, Gross $ 70,300 69,313
Estimated useful life (in years) 3 years 9 months  
Property, Plant and Equipment, Depreciation Method [Extensible Enumeration] us-gaap:StraightLineDepreciationMethodMember  
Injection and recovery wells [Member]    
Property, Plant and Equipment [Line Items]    
Properties, plant and equipment, Gross $ 6,134 $ 6,134
Properties, plant and equipment, net $ 2,100  
Estimated useful life (in years) 3 years 9 months [1] 5 years
Property, Plant and Equipment, Depreciation Method [Extensible Enumeration] us-gaap:StraightLineDepreciationMethodMember  
Buildings [Member]    
Property, Plant and Equipment [Line Items]    
Properties, plant and equipment, Gross $ 1,050 $ 979
Property, Plant and Equipment, Depreciation Method [Extensible Enumeration] us-gaap:StraightLineDepreciationMethodMember  
Buildings [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful life (in years) 15 years  
Buildings [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful life (in years) 7 years  
Vehicles [Member]    
Property, Plant and Equipment [Line Items]    
Properties, plant and equipment, Gross $ 305 305
Property, Plant and Equipment, Depreciation Method [Extensible Enumeration] us-gaap:StraightLineDepreciationMethodMember  
Vehicles [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful life (in years) 5 years  
Vehicles [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful life (in years) 3 years  
Other plant and equipment [Member]    
Property, Plant and Equipment [Line Items]    
Properties, plant and equipment, Gross $ 817 $ 754
Property, Plant and Equipment, Depreciation Method [Extensible Enumeration] us-gaap:StraightLineDepreciationMethodMember  
Other plant and equipment [Member] | Maximum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful life (in years) 10 years  
Other plant and equipment [Member] | Minimum [Member]    
Property, Plant and Equipment [Line Items]    
Estimated useful life (in years) 5 years  
[1] Effective July 1, 2025, the estimated useful life of the injection and recovery wells were revised downward from 5 years to 3.75 years to align with the Company’s revised operational and development plans.