Note 15 - Subsequent Event (Details Textual) - U S Global Investors Funds [Member]	Mar. 31, 2024
Investment Advisory Fees, Fee Adjustment Base Percentage Adjustment When Fund Performance is Not Within Limits to Benchmark Index	0.25%
Investment Advisory Fees, Fee Adjustment Percent, Minimum Performance to Designed Benchmark Over Prior Rolling 12 Months	5.00%

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

No definition available.

Name:	grow_InvestmentAdvisoryFeesFeeAdjustmentBasePercentageAdjustmentWhenFundPerformanceIsNotWithinLimitsToBenchmarkIndex
Namespace Prefix:	grow_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant