Name:	aumn_AdjustmentsToWarrantLiability
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the exercise price per share or per unit of warrants or rights on dilution adjustment.

No definition available.

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Data Type:	us-types:perUnitItemType
Balance Type:	na
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Represents the dilution adjustment for the warrants or rights during the period.

No definition available.

Name:	aumn_ClassOfWarrantOrRightDilutionAdjustment
Namespace Prefix:	aumn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Represents the exercise price per share or per unit of warrants or rights expired.

No definition available.

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Data Type:	us-types:perUnitItemType
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Represents the exercise price per share or per unit of warrants or rights granted.

No definition available.

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Represents the number of warrants or rights expired.

No definition available.

Name:	aumn_ClassOfWarrantOrRightExpired
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Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Represents the warrants or rights granted during the period.

No definition available.

Name:	aumn_ClassOfWarrantOrRightGrantedDuringPeriod
Namespace Prefix:	aumn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
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Represents the number of warrants outstanding after dilution adjustment.

No definition available.

Name:	aumn_ClassOfWarrantOrRightOutstandingAfterDilutionAdjustment
Namespace Prefix:	aumn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

Name:	aumn_ClassOfWarrantOrRightOutstandingRollForward
Namespace Prefix:	aumn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The period over which each class of warrants or rights outstanding may be exercised.

No definition available.

Name:	aumn_ClassOfWarrantOrRightTermOfWarrantsOrRights
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Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Name:	aumn_ClassOfWarrantOrRightWeightedAverageExercisePricePerShareRollForward
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Represents the number of shares of common stock included in each unit sold.

No definition available.

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Namespace Prefix:	aumn_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i)(4))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Subparagraph 4

-Article 4

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Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

No definition available.

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Number of warrants or rights outstanding.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Article 4

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
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Period Type:	instant

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

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Data Type:	num:percentItemType
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Period Type:	duration

Risk-free interest rate assumption used in valuing an instrument.

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Data Type:	num:percentItemType
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Period Type:	duration

Price of a single share of a number of saleable stocks of a company.

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph i

-Article 4

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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Name:	us-gaap_ClassOfWarrantOrRightAxis=aumn_Warrant2012Member
Namespace Prefix:
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Name:	us-gaap_ClassOfWarrantOrRightAxis=aumn_Warrant2014Member
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Namespace Prefix:
Data Type:	na
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