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Note 3 - Investment Management and Other Fees (Tables) | 6 Months Ended
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Dec. 31, 2022
Notes Tables |
Disaggregation of Revenue [Table Text Block] |
|  | Six Months Ended |  |  | Three Months Ended |
|  | December 31, |  |  | December 31, |
(dollars in thousands) |  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
ETF advisory fees |  | $ | 7,218 |  |  | $ | 10,768 |  |  | $ | 3,305 |  |  | $ | 5,452 |
USGIF advisory fees |  |  | 1,135 |  |  |  | 1,898 |  |  |  | 525 |  |  |  | 932 |
USGIF performance fees earned (paid) |  |  | (281 | ) |  |  | 329 |  |  |  | (135 | ) |  |  | 141 |
Total Advisory Fees |  |  | 8,072 |  |  |  | 12,995 |  |  |  | 3,695 |  |  |  | 6,525 |
USGIF administrative services fees |  |  | 68 |  |  |  | 100 |  |  |  | 33 |  |  |  | 49 |
Total Operating Revenue |  | $ | 8,140 |  |  | $ | 13,095 |  |  | $ | 3,728 |  |  | $ | 6,574 |

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