XML 44 R33.htm IDEA: XBRL DOCUMENT v3.23.3

Construction in Progress - Summary of Construction in Progress (Detail) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023
Construction In Progress [Line Items]
Total construction in progress	$ 71,497	$ 67,553
Engineering services [Member]
Construction In Progress [Line Items]
Total construction in progress	9,122	9,122
Equipment [Member]
Construction In Progress [Line Items]
Total construction in progress	32,507	31,692
Construction [Member]
Construction In Progress [Line Items]
Total construction in progress	23,989	21,579
Injection and recovery wells [Member]
Construction In Progress [Line Items]
Total construction in progress	4,097	4,002
Capitalized Interest [Member]
Construction In Progress [Line Items]
Total construction in progress	$ 1,782	$ 1,158

X

- Definition

Construction in progress.

+ References

No definition available.

+ Details

Name:	feam_ConstructionInProgressLineItems
Namespace Prefix:	feam_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of structure or a modification to a structure under construction. Includes recently completed structures or modifications to structures that have not been placed into service.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-1

+ Details

Name:	us-gaap_ConstructionInProgressGross
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	feam_ConstructionInProgressAxis=feam_EngineeringServicesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	feam_ConstructionInProgressAxis=us-gaap_EquipmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	feam_ConstructionInProgressAxis=us-gaap_ConstructionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	feam_ConstructionInProgressAxis=feam_InjectionAndRecoveryWellsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	feam_ConstructionInProgressAxis=feam_CapitalizedInterestMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: