Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Summary of Significant Accounting Policies (Policies)
Notes Tables
Notes Details

Commitments and Contingencies (Details Narrative)

v3.19.1

Commitments and Contingencies (Details Narrative)			9 Months Ended
Commitments and Contingencies (Details Narrative)	Oct. 29, 2018 USD ($)	Jun. 27, 2016 USD ($)	Jan. 31, 2019 USD ($) a $ / T	Jan. 31, 2018 USD ($)
Lease expense \| $			$ 2,240	$ 2,240
Employment Agreement [Member] \| Common Stock [Member]
Percentage of base salary		75.00%
Employment Agreement [Member] \| Cash [Member]
Percentage of base salary		25.00%
Employment Agreement [Member] \| Mr. Karr [Member]
Base salary \| $	$ 250,000
Percentage of base salary	100.00%
Employment Agreement [Member] \| Mr. Rector [Member]
Base salary \| $	$ 180,000
Percentage of base salary	100.00%
Employment Agreement [Member] \| Mr. David Mathewson [Member]
Base salary \| $		$ 200,000
State of Wyoming Mining Lease One [Member]
Area of land \| a			640
Lease renewed date			Feb. 28, 2013
Lease term			10 years
Lease annual payment per acre			2.00
Lease annual payment per acre third ten year term			3.00
Lease annual payment per acre thereafter			4.00
State of Wyoming Mining Lease Two [Member]
Area of land \| a			480
Lease renewed date			Feb. 28, 2014
Lease term			10 years
Lease annual payment per acre			2.00
Lease annual payment per acre third ten year term			3.00
Lease annual payment per acre thereafter			4.00

- Definition

Lease annual payment per acre.

+ References

No definition available.

+ Details

Name:	USAU_LeaseAnnualPaymentPerAcre
Namespace Prefix:	USAU_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Lease annual payment per acre thereafter.

+ References

No definition available.

+ Details

Name:	USAU_LeaseAnnualPaymentPerAcreThereafter
Namespace Prefix:	USAU_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Lease annual payment per acre third ten year term.

+ References

No definition available.

+ Details

Name:	USAU_LeaseAnnualPaymentPerAcreThirdTenYearTerm
Namespace Prefix:	USAU_
Data Type:	us-types:perUnitItemType
Balance Type:	na
Period Type:	instant

- Definition

Lease renewed date.

+ References

No definition available.

+ Details

Name:	USAU_LeaseRenewedDate
Namespace Prefix:	USAU_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of base salary.

+ References

No definition available.

+ Details

Name:	USAU_PercentageOfBaseSalary
Namespace Prefix:	USAU_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Area of land held.

+ References

No definition available.

+ Details

Name:	us-gaap_AreaOfLand
Namespace Prefix:	us-gaap_
Data Type:	num:areaItemType
Balance Type:	na
Period Type:	instant

- Definition

Term of lessor's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
-Paragraph 3
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=77888428&loc=SL77919359-209981

+ Details

Name:	us-gaap_LessorOperatingLeaseTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of expense for salary and wage arising from service rendered by officer. Excludes allocated cost, labor-related nonsalary expense, and direct and overhead labor cost included in cost of good and service sold.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(4))
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

+ Details

Name:	us-gaap_OfficersCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918638-209977

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_CashAndCashEquivalentsAxis=us-gaap_CashMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=USAU_MrKarrMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=USAU_MrRectorMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=USAU_MrDavidMathewsonMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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