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Note 4 - Investment Management and Other Fees (Tables) | 12 Months Ended
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Jun. 30, 2022
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Year Ended June 30, |
(dollars in thousands) |  | 2022 |  |  | 2021 |
ETF advisory fees |  | $ | 20,962 |  |  | $ | 17,127 |
USGIF advisory fees |  |  | 3,543 |  |  |  | 3,836 |
USGIF performance fees earned |  |  | 20 |  |  |  | 482 |
Total Advisory Fees |  |  | 24,525 |  |  |  | 21,445 |
USGIF administrative services fees |  |  | 189 |  |  |  | 209 |
Total Operating Revenue |  | $ | 24,714 |  |  | $ | 21,654 |

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