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Note 5 - Investment in Unconsolidated Affiliates (Tables) | 12 Months Ended
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Dec. 31, 2023
Notes Tables |
Schedule of Amounts Due From Affiliate [Table Text Block] |
(In Thousands) |  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Due from Sonatide at beginning of year |  | $ | — |  |  | $ | 49,011 |  |  | $ | 41,623 |
Revenue earned by the company through Sonatide |  |  | — |  |  |  | — |  |  |  | 41,775 |
Less amounts received from Sonatide |  |  | — |  |  |  | — |  |  |  | (26,429 | )
Less amounts used to offset Due to Sonatide obligations (A) |  |  | — |  |  |  | — |  |  |  | (8,530 | )
Less impairment of due from affiliate |  |  | — |  |  |  | — |  |  |  | (400 | )
Write off of due from affiliate in connection with the acquisition |  |  | — |  |  |  | (49,011 | ) |  |  | — |
Other |  |  | — |  |  |  | — |  |  |  | 972 |
|  | $ | — |  |  | $ | — |  |  | $ | 49,011 |
Schedule of Amoutns Due to Affiliate [Table Text Block] |
(In Thousands) |  | Year Ended December 31, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Due to Sonatide at beginning of year |  | $ | — |  |  | $ | 40,432 |  |  | $ | 32,767 |
Plus commissions payable to Sonatide |  |  | — |  |  |  | — |  |  |  | 3,832 |
Plus amounts paid by Sonatide on behalf of the company |  |  | — |  |  |  | — |  |  |  | 10,914 |
Less amounts used to offset Due from Sonatide obligations (A) |  |  | — |  |  |  | — |  |  |  | (8,530 | )
Write off of due to affiliate in connection with the acquisition |  |  | — |  |  |  | (40,432 | ) |  |  | — |
Other |  |  | — |  |  |  | — |  |  |  | 1,449 |
|  | $ | — |  |  | $ | — |  |  | $ | 40,432 |

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