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Commitment and Contingencies - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Commitments and Contingencies Disclosure [Abstract]
Annual renewal costs expected for year ended December 31, 2025	$ 1,505
Performance bonds	7,751	$ 7,680
Undiscounted cash flows	$ 23,529	$ 17,130

X

- Definition

Asset Retirement Obligation, Performance Bonds, Restoration and Reclamation Obligations

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No definition available.

+ Details

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X

- Definition

Asset Retirement Obligation, Undiscounted Cash Flows

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No definition available.

+ Details

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X

- Definition

Lessee, Mineral Right Lease, Renewal Costs Expected To Be Paid, Year One

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No definition available.

+ Details

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Namespace Prefix:	encr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

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