Annual report pursuant to Section 13 and 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

Financing Agreements (Details Narrative)

v3.7.0.1

Financing Agreements (Details Narrative) - USD ($)				12 Months Ended
Financing Agreements (Details Narrative) - USD ($)	Apr. 13, 2017	Nov. 30, 2013	Oct. 31, 2013	Apr. 30, 2017	Apr. 30, 2016
Common stock conversion price, per share				$ 4.80
Convertible Promissory Note [Member]
Weighted average interest rate				9.20%	8.50%
Line of credit average outstanding amount				$ 1,488,000	$ 2,348,000
USG [Member] \| Convertible Promissory Note [Member]
Debt instrument, interest rate	9.00%
Convertible note payable principal amount	$ 250,000
Debt instrument, term	6 months
Common stock conversion price, percent	95.00%
USG [Member] \| Convertible Promissory Note [Member] \| Minimum [Member]
Common stock conversion price, per share	$ 4.60
Sale Leaseback Agreement [Member]
Sale leaseback, portion of deferred gain in accrued liabilities				72,000	72,000
Sale leaseback, portion of deferred gain in other long term liabilities				35,000	107,000
Sale Leaseback Agreement [Member] \| Mr. Sheerr [Member]
Sale leaseback, monthly rental payments			$ 7,500
Sale leaseback, lease term			The lease is for a term of 60 months and the Company is obligated to pay approximately $7,500 per month for the term of the lease. The Company has an option to extend the lease for an additional two year period.
Sale leaseback, gain on sale of assets			$ 139,000
Gain on sale of future lease payments			$ 322,000
Financing Agreement [Member]
Line of credit facility, maximum borrowing capacity				3,500,000
Line of credit, borrowed amounts				$ 1,340,000	$ 1,776,000
Financing Agreement [Member] \| Rosenthal & Rosenthal, Inc [Member]
Line of credit facility, maximum borrowing capacity		$ 3,500,000
Debt instrument, maturity date		Nov. 30, 2017
Debt instrument, interest rate		3.00%
Weighted average interest rate				9.30%
Financing Agreement [Member] \| Rosenthal & Rosenthal, Inc [Member] \| Prime Rate [Member]
Debt instrument, interest rate		3.25%

- Definition

Sale leaseback, portion of deferred gain in other long term liabilities.

+ References

No definition available.

+ Details

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Namespace Prefix:	USAU_
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- Definition

Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(13))
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- Definition

The price per share of the conversion feature embedded in the debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
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- Definition

Minimum percentage of common stock price to conversion price of convertible debt instruments to determine eligibility of conversion.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
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- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Balance Type:	na
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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

Average amount borrowed under the credit facility during the period.

+ References

No definition available.

+ Details

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Subparagraph (SX 210.5-02.19(b),22(b))
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- Definition

Weighted average interest rate of long-term debt outstanding calculated at point in time.

+ References

No definition available.

+ Details

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- Definition

Present value of minimum lease payments for sale-leaseback transactions accounted for using the deposit method or as a financing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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Balance Type:	debit
Period Type:	duration

- Definition

Cumulative amount of gain recognized (out of deferred gain) as income or a reduction in rent expense.

+ References

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- Definition

The portion of the gain that will be recorded as income or a reduction in rent expense in future periods less amounts recognized in the current period.

+ References

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- Definition

A description of the terms of the lease(s) related to the assets being leased-back in connection with the transaction involving the sale of property to another party and the lease of the property back to the seller.

+ References

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- Definition

The amount of the monthly rental payments due under the lease entered into in connection with the transactions involving the sale of property to another party and the lease of the property back to the seller.

+ References

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