v3.26.1
Shareholder Report
 6 Months Ended
Jun. 30, 2026
USD ($)
Holding
Shareholder Report [Line Items]  
Document Type N-CSRS
Amendment Flag false
Registrant Name US Global Investors Funds
Entity Central Index Key 0000101507
Entity Investment Company Type N-1A
Document Period End Date Jun. 30, 2026
C000069385  
Shareholder Report [Line Items]  
Fund Name Global Luxury Goods Fund
Class Name Investor
Trading Symbol USLUX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the USGI Global Luxury Goods Fund for the period of January 1, 2026, to June 30, 2026.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block]

This semi-annual shareholder report contains important information about the USGI Global Luxury Goods Fund for the period of January 1, 2026, to June 30, 2026. You can find additional information about the Fund at  www.usfunds.com/invest-with-us/prospectus-2/. You can also request this information by contacting us at (800) 873-8637.

Additional Information Phone Number (800) 873-8637
Additional Information Website www.usfunds.com/invest-with-us/prospectus-2/
Expenses [Text Block]

What were the Fund's costs for the last six months? 

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Class
$85
1.75%
Expenses Paid, Amount $ 85
Expense Ratio, Percent 1.75%
AssetsNet $ 51,392,148
Holdings Count | Holding 52
Advisory Fees Paid, Amount $ 222,167
InvestmentCompanyPortfolioTurnover 45.00%
Additional Fund Statistics [Text Block]

Fund Statistics

Table Summary
Total Net Assets
$51,392,148
# of Portfolio Holdings
52
Portfolio Turnover Rate
45%
Management Fee (Net of fees waived)
$222,167
Holdings [Text Block]

Sector Weightings

(% total investments)

Group By Sector Chart
Table Summary
Value
Value
Consumer Discretionary
60.7%
Consumer Staples
22.7%
Financials
6.4%
Materials
4.4%
Communication Services
3.6%
Other
2.2%
Largest Holdings [Text Block]

Top Ten Holdings 

(% net assets)

Table Summary
LVMH Moet Hennessy Louis Vuitton SE, ADR
6.78%
Hermes International SCA
6.26%
Cie Financiere Richemont SA
6.01%
Ferrari NV
5.74%
Tesla, Inc.
5.28%
Royal Caribbean Cruises, Ltd.
5.27%
Viking Holdings, Ltd.
3.85%
Amazon.com, Inc.
3.48%
Mercedes-Benz Group AG, ADR
3.21%
Carnival Corp., Ltd.
2.92%
C000012993  
Shareholder Report [Line Items]  
Fund Name Global Resources Fund
Class Name Investor
Trading Symbol PSPFX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the USGI Global Resources Fund for the period of January 1, 2026, to June 30, 2026.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block]

This semi-annual shareholder report contains important information about the USGI Global Resources Fund for the period of January 1, 2026, to June 30, 2026. You can find additional information about the Fund at  www.usfunds.com/invest-with-us/prospectus-2/. You can also request this information by contacting us at (800) 873-8637.
Additional Information Phone Number (800) 873-8637
Additional Information Website www.usfunds.com/invest-with-us/prospectus-2/
Expenses [Text Block]

What were the Fund's costs for the last six months? 

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Class
$84
1.75%
Expenses Paid, Amount $ 84
Expense Ratio, Percent 1.75%
AssetsNet $ 54,244,348
Holdings Count | Holding 114
Advisory Fees Paid, Amount $ 278,370
InvestmentCompanyPortfolioTurnover 24.00%
Additional Fund Statistics [Text Block]

Fund Statistics

Table Summary
Total Net Assets
$54,244,348
# of Portfolio Holdings
114
Portfolio Turnover Rate
24%
Management Fee (Net of fees waived)
$278,370
Holdings [Text Block]

Sector Weightings

(% total investments)

Group By Sector Chart
Table Summary
Value
Value
Gold Mining
18.9%
Metal - Diversified
13.1%
Enterprise Software/Services
11.5%
Oil Companies - Integrated
8.7%
Oil Companies - Exploration & Production
7.5%
Metal - Copper
5.1%
Diversified Minerals
4.3%
Precious Metals
3.4%
Silver Mining
3.3%
Agricultural Chemicals
3.0%
Other
21.2%
Largest Holdings [Text Block]

Top Ten Holdings 

(% net assets)

Table Summary
Abaxx Technologies, Inc.
11.01%
Montage Gold Corp.
8.39%
Woodside Energy Group, Ltd., ADR
4.45%
Sunrise Energy Metals, Ltd.
3.89%
TotalEnergies SE
3.16%
Nutrien, Ltd.
2.90%
Cheniere Energy, Inc.
2.73%
Shell PLC, ADR
2.57%
K92 Mining, Inc.
2.32%
Coeur Mining, Inc.
2.26%
C000012994  
Shareholder Report [Line Items]  
Fund Name Gold and Precious Metals Fund
Class Name Investor
Trading Symbol USERX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the USGI Gold and Precious Metals Fund for the period of January 1, 2026, to June 30, 2026.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block]

This semi-annual shareholder report contains important information about the USGI Gold and Precious Metals Fund for the period of January 1, 2026, to June 30, 2026. You can find additional information about the Fund at  www.usfunds.com/invest-with-us/prospectus-2/. You can also request this information by contacting us at (800) 873-8637.

Additional Information Phone Number (800) 873-8637
Additional Information Website www.usfunds.com/invest-with-us/prospectus-2/
Expenses [Text Block]

What were the Fund's costs for the last six months? 

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Class
$72
1.53%
Expenses Paid, Amount $ 72
Expense Ratio, Percent 1.53%
AssetsNet $ 243,450,950
Holdings Count | Holding 80
Advisory Fees Paid, Amount $ 1,343,363
InvestmentCompanyPortfolioTurnover 20.00%
Additional Fund Statistics [Text Block]

Fund Statistics

Table Summary
Total Net Assets
$243,450,950
# of Portfolio Holdings
80
Portfolio Turnover Rate
20%
Management Fee Paid
$1,343,363
Holdings [Text Block]

Sector Weightings

(% total investments)

Group By Sector Chart
Table Summary
Value
Value
Gold Mining
51.1%
Silver Mining
18.2%
Precious Metals
17.1%
Metal - Diversified
3.6%
Other
10.0%
Largest Holdings [Text Block]

Top Ten Holdings 

(% net assets)

Table Summary
K92 Mining, Inc.
6.45%
Aya Gold & Silver, Inc.
6.03%
Discovery Silver Corp.
5.03%
Americas Gold & Silver Corp.
4.66%
Mineros SA
4.58%
DPM Metals, Inc.
4.00%
IAMGOLD Corp.
3.74%
Vox Royalty Corp.
2.94%
Barrick Mining Corp.
2.57%
Aris Mining Corp.
2.45%
C000013000  
Shareholder Report [Line Items]  
Fund Name Near-Term Tax Free Fund
Class Name Investor
Trading Symbol NEARX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the USGI Near-Term Tax Free Fund for the period of January 1, 2026, to June 30, 2026.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block]

This semi-annual shareholder report contains important information about the USGI Near-Term Tax Free Fund for the period of January 1, 2026, to June 30, 2026. You can find additional information about the Fund at  www.usfunds.com/invest-with-us/prospectus-2/. You can also request this information by contacting us at (800) 873-8637.

Additional Information Phone Number (800) 873-8637
Additional Information Website www.usfunds.com/invest-with-us/prospectus-2/
Expenses [Text Block]

What were the Fund's costs for the last six months? 

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Class
$22
0.45%
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.45%
AssetsNet $ 20,643,444
Holdings Count | Holding 37
Advisory Fees Paid, Amount $ (58,234)
InvestmentCompanyPortfolioTurnover 30.00%
Additional Fund Statistics [Text Block]

Fund Statistics

Table Summary
Total Net Assets
$20,643,444
# of Portfolio Holdings
37
Portfolio Turnover Rate
30%
Management Fee (Net of fees waived)
$(58,234)
Holdings [Text Block]

Maturity Weightings

(% total investments)

Group By Sector Chart
Table Summary
Value
Value
Less than 1 Month
41.5%
1-3 Months
5.9%
3-12 Months
23.2%
1-3 Years
29.4%
Largest Holdings [Text Block]

Top Ten Area Concentrations 

(% of net assets)

Table Summary
Texas
17.76%
Tennessee
11.50%
Kentucky
10.23%
California
9.97%
Pennsylvania
6.08%
Wisconsin
5.93%
Alabama
5.15%
Illinois
4.99%
Kansas
3.25%
New Mexico
2.99%
C000012998  
Shareholder Report [Line Items]  
Fund Name U.S. Government Securities Ultra-Short Bond Fund
Class Name Investor
Trading Symbol UGSDX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the USGI U.S. Government Securities Ultra-Short Bond Fund for the period of January 1, 2026, to June 30, 2026.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block]

This semi-annual shareholder report contains important information about the USGI U.S. Government Securities Ultra-Short Bond Fund for the period of January 1, 2026, to June 30, 2026. You can find additional information about the Fund at  www.usfunds.com/invest-with-us/prospectus-2/. You can also request this information by contacting us at (800) 873-8637.

Additional Information Phone Number (800) 873-8637
Additional Information Website www.usfunds.com/invest-with-us/prospectus-2/
Expenses [Text Block]

What were the Fund's costs for the last six months? 

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Class
$22
0.45%
Expenses Paid, Amount $ 22
Expense Ratio, Percent 0.45%
AssetsNet $ 30,994,869
Holdings Count | Holding 12
Advisory Fees Paid, Amount $ (44,904)
InvestmentCompanyPortfolioTurnover 8.00%
Additional Fund Statistics [Text Block]

Fund Statistics

Table Summary
Total Net Assets
$30,994,869
# of Portfolio Holdings
12
Portfolio Turnover Rate
8%
Management Fee (Net of fees waived)
$(44,904)
Holdings [Text Block]

Sector Weightings

(% total investments)

Group By Sector Chart
Table Summary
Value
Value
U.S. Treasury Bill
55.2%
U.S. Treasury Note/Bond
22.2%
Federal Home Loan Mortgage Corp.
17.5%
Federal Home Loan Bank
5.1%
Largest Holdings [Text Block]

Top Ten Holdings 

(% net assets)

Table Summary
U.S. Treasury Bill
15.54%
U.S. Treasury Note/Bond
14.48%
Federal Home Loan Mortgage Corp.
11.23%
U.S. Treasury Bill
9.66%
U.S. Treasury Bill
7.92%
U.S. Treasury Bill
6.43%
U.S. Treasury Note/Bond
6.40%
U.S. Treasury Bill
6.24%
Federal Home Loan Mortgage Corp.
5.28%
Federal Home Loan Bank
4.80%
C000012995  
Shareholder Report [Line Items]  
Fund Name World Precious Minerals Fund
Class Name Investor
Trading Symbol UNWPX
Annual or Semi-Annual Statement [Text Block] This semi-annual shareholder report contains important information about the USGI World Precious Minerals Fund for the period of January 1, 2026, to June 30, 2026.
Shareholder Report Annual or Semi-Annual Semi-Annual Shareholder Report
Additional Information [Text Block]

This semi-annual shareholder report contains important information about the USGI World Precious Minerals Fund for the period of January 1, 2026, to June 30, 2026. You can find additional information about the Fund at  www.usfunds.com/invest-with-us/prospectus-2/. You can also request this information by contacting us at (800) 873-8637.

Additional Information Phone Number (800) 873-8637
Additional Information Website www.usfunds.com/invest-with-us/prospectus-2/
Expenses [Text Block]

What were the Fund's costs for the last six months? 

(based on a hypothetical $10,000 investment)

Table Summary
Class Name
Costs of a $10,000 investment
Costs paid as a percentage of a $10,000 investment
Investor Class
$85
1.75%
Expenses Paid, Amount $ 85
Expense Ratio, Percent 1.75%
AssetsNet $ 66,748,228
Holdings Count | Holding 158
Advisory Fees Paid, Amount $ 367,915
InvestmentCompanyPortfolioTurnover 19.00%
Additional Fund Statistics [Text Block]

Fund Statistics

Table Summary
Total Net Assets
$66,748,228
# of Portfolio Holdings
158
Portfolio Turnover Rate
19%
Management Fee (Net of fees waived)
$367,915
Holdings [Text Block]

Sector Weightings

(% total investments)

Group By Sector Chart
Table Summary
Value
Value
Gold Mining
57.9%
Precious Metals
16.8%
Silver Mining
8.9%
Metal - Diversified
6.2%
Diversified Minerals
4.5%
Other
5.7%
Largest Holdings [Text Block]

Top Ten Holdings 

(% net assets)

Table Summary
Omai Gold Mines Corp.
7.47%
Radisson Mining Resources, Inc.
6.64%
Montage Gold Corp.
5.01%
G2 Goldfields, Inc.
4.97%
TriStar Gold, Inc.
4.95%
Vizsla Silver Corp.
3.94%
K92 Mining, Inc.
3.53%
Vizsla Royalties Corp.
2.79%
Tolu Minerals, Ltd.
2.44%
Highlander Silver Corp.
2.29%