The aggregate percentage of ownership interest in the joint venture held by one or more unrelated entities.

No definition available.

Name:	aurm_AggregatePercentageOwnedByUnrelatedEntity
Namespace Prefix:	aurm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Agreement Expiration Time

+ References

No definition available.

+ Details

Name:	aurm_AgreementExpirationTime
Namespace Prefix:	aurm_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

The maximum amount the entity has agreed it may provide to another person or entity to fund exploration costs.

+ References

No definition available.

+ Details

Name:	aurm_OptionalExplorationExpenseFundingCommitmentMaximumAmount
Namespace Prefix:	aurm_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	aurm_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems
Namespace Prefix:	aurm_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of ownership interest in an investee if a specified amount of funding is provided to the investee.

+ References

No definition available.

+ Details

Name:	aurm_PotentialOwnershipInterestInInvesteeIfFundingIsProvidedByEntity
Namespace Prefix:	aurm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The percentage of earnings or losses of the investee that the entity could receive if specified criteria are met, including levels of funding.

+ References

No definition available.

+ Details

Name:	aurm_PotentialPercentageOfInvesteeEarningsAttributableToEntity
Namespace Prefix:	aurm_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

The contractual period of time the entity has to meet specified funding requirements in order to achieve certain objectives, such as ownership interest or rights to profits.

+ References

No definition available.

+ Details

Name:	aurm_SpecifiedPeriodToMeetFundingRequirements
Namespace Prefix:	aurm_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=25497992&loc=d3e1392-128463

+ Details

Name:	us-gaap_BusinessAcquisitionPercentageOfVotingInterestsAcquired
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

+ References

No definition available.

+ Details

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Organization and business (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Apr. 30, 2014 Century Concession in Laos [Member] Century Thrust Joint Venture Agreement [Member]	Dec. 31, 2010 Century Concession in Laos [Member] Century Thrust Joint Venture Agreement [Member]	Apr. 30, 2014 Golden Target Pty Ltd, Principal Stockholder [Member]	Jul. 31, 2009 Golden Target Pty Ltd, Principal Stockholder [Member]
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Percentage of entity owned			96.21%
Percentage of the entity acquired from certain stockholders				96.00%
Aggregate percentage owned by unrelated entity		70.00%
Potential percentage of investee earnings attributable to Aurum if specified funding is provided by Aurum	72.86%
Potential ownership percentage if funding is provided by Aurum	51.00%
Exploration expense funding commitment, maximum amount	$ 6.5
Specified period to meet funding requirements	5 years
Expiration date of specified period to meet funding requirements	2015-12