Aggregate fees waived and expenses borne.

No definition available.

Name:	grow_AggregateFeesWaivedAndExpensesBorne
Namespace Prefix:	grow_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Annual administrative fee rate.

+ References

No definition available.

+ Details

Name:	grow_AnnualAdministrativeFeeRate
Namespace Prefix:	grow_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	grow_INVESTMENTMANAGEMENTANDOTHERFEESDetailsLineItems
Namespace Prefix:	grow_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Increase (decrease) in base advisory fees realized.

+ References

No definition available.

+ Details

Name:	grow_IncreaseDecreaseInBaseAdvisoryFeesRealized
Namespace Prefix:	grow_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Base percentage adjustment when fund performance is not within limits to benchmark index.

+ References

No definition available.

+ Details

Name:	grow_InvestmentAdvisoryFeesFeeAdjustmentBasePercentageAdjustmentWhenFundPerformanceIsNotWithinLimitsToBenchmarkIndex
Namespace Prefix:	grow_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percent minimum performance to designed benchmark over prior rolling 12 months.

+ References

No definition available.

+ Details

Name:	grow_InvestmentAdvisoryFeesFeeAdjustmentPercentMinimumPerformanceToDesignedBenchmarkOverPriorRolling12Months
Namespace Prefix:	grow_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The unitary management fee as a percentage of average net assets.

+ References

No definition available.

+ Details

Name:	grow_UnitaryManagementFeePercentageofAverageNetAssets
Namespace Prefix:	grow_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of fees earned from providing investment advice and research to customers.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13(a),(d))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

+ Details

Name:	us-gaap_InvestmentAdvisoryFees
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of revenue earned by the entity based on the investment results achieved. Excludes fees based upon a percentage of the assets under management not performance-related.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04.13 (a))
-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

+ Details

Name:	us-gaap_PerformanceFees
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section S99
-Paragraph 3
-Subparagraph (SX 210.6-06(3))
-URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e604059-122996

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(5))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

+ Details

Name:	us-gaap_ReceivablesNetCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=grow_FundClientsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=grow_GalileoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=grow_USGlobalInvestorsFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalUnitsByClassAxis=grow_InvestorClassSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CapitalUnitsByClassAxis=grow_InstitutionalClassSharesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=grow_USGlobalETFsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MajorCustomersAxis=grow_OffshoreClientsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

INVESTMENT MANAGEMENT AND OTHER FEES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Advisory fees	$ 1,929	$ 1,569	$ 3,362	$ 3,460
Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables	1,000		1,000
Galileo [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Advisory fees	287	303	505	603
Aggregate Fees Waived and Expenses Borne	9	9	33	21
Performance Fees	464		464
Galileo [Member] \| Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables	605		605
U.S. Global Investors Funds [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Advisory fees	$ 1,200	1,200	$ 2,300	2,600
Base percentage adjustment, fund performance not within benchmark index	0.25%		0.25%
Minimum performance to designated benchmark over prior rolling twelve months, percent	5.00%		5.00%
Increase (decrease) in base advisory fees realized	$ (192)	(9)	$ (308)	30
Aggregate Fees Waived and Expenses Borne	102	313	$ 334	546
U.S. Global Investors Funds [Member] \| Investor Class Shares [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Administrative fee rate			0.05%
U.S. Global Investors Funds [Member] \| Institutional Class Shares [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Administrative fee rate			0.04%
U.S. Global Investors Funds [Member] \| Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables	381		$ 381
U.S. Global ETFs [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Advisory fees	184	76	$ 369	142
Unitary Management Fee, Percentage of Average Net Assets			0.60%
U.S. Global ETFs [Member] \| Fund Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Receivables	63		$ 63
Offshore Clients [Member]
INVESTMENT MANAGEMENT AND OTHER FEES (Details) [Line Items]
Advisory fees	2	32	3	68
Performance Fees	$ 0	$ 0	$ 0	$ 0