v3.26.3
Property, Plant and Equipment & Natural Gas Properties (Tables)
 12 Months Ended
Jun. 30, 2026
Property, Plant, and Equipment [Abstract]  
Schedule of Oil and Gas, Capitalized Exploratory Well Cost, Roll Forward
Natural gas properties
(in thousands)EP 161EP 136EP 76, 98 & 117Mako TroughTotal
Balance as of July 1, 2024$23,744 $51,035 $155,340 $— $230,119 
Capital expenditure
1,181 315 101,441 — 102,937 
Restoration assets— — 524 — 524 
Interest on finance lease liability and related depreciation of ROU assets capitalized— — 12,633 — 12,633 
Government grant
— (6,169)— — (6,169)
Effect of changes in foreign exchange rates
166 302 1,802 — 2,270 
Balance as of June 30, 202525,091 45,483 271,740 — 342,314 
Additions through asset acquisitions— — 285,435 1,614 287,049 
Capital expenditure
3,557 181 145,553 — 149,291 
Restoration assets— — 136 — 136 
Interest on finance lease liability and related depreciation of ROU assets capitalized
— — 11,953 — 11,953 
Disposal— (444)— — (444)
Government grant(66)(54)— — (120)
Effect of changes in foreign exchange rates
1,120 2,258 13,479 — 16,857 
Balance as of June 30, 2026$29,702 $47,424 $728,296 $1,614 $807,036 
Schedule of Property, Plant, and Equipment
Depreciation is calculated on a straight-line basis over the expected useful lives of the asset as follows:
Leasehold improvements
Shorter of useful life (5 years) or unexpired period of lease term
The following table summarizes the carrying amounts of held property, plant and equipment, including leasehold improvements, as of June 30, 2026 and 2025 (in thousands):
June 30,
20262025
Leasehold improvements - at cost
$560 $535 
Sand mining permits736 293 
Total property, plant and equipment1,296 828 
Less: Accumulated depreciation
(552)(520)
Total plant and equipment - net
$744 $308