Assets Held for Sale and Discontinued Operations - Asset retirement and reclamation liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Assets Held for Sale and Discontinued Operations
Current asset retirement and reclamation liabilities	$ 150	$ 150
Non-current asset retirement and reclamation liabilities	3,281	4,096
Total	$ 3,431	$ 4,246	$ 3,993

Amount classified as asset retirement and reclamation liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of beyond one year or the normal operating cycle, if longer.

No definition available.

Name:	aumn_DisposalGroupIncludingDiscontinuedOperationAssetRetirementAndReclamationLiabilitiesNoncurrent
Namespace Prefix:	aumn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant