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Note 4 - Insurance SPAC Investments and Other Significant Events - Income Statement Impact (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Principal transactions and other income |  |  |  |  |  |  |  |  | $ 45,506 | $ 2,103 | $ 4,573
Equity-based compensation |  |  |  |  |  |  |  |  | (12,553) | (744) | (623)
Other operating |  |  |  |  |  |  |  |  | (19,997) | (19,653) | (20,342)
Loss from equity method affiliates | $ (244) | $ (1,371) | $ (1,233) | $ (107) | $ (188) | $ (109) | $ (248) | $ (8) | (2,955) | (553) |
Net income / (loss) | 43,626 | 3,343 | 3,269 | (11,785) | 1,197 | (1,918) | (1,028) | (1,824) | 38,453 | (3,573) | (3,987)
Less: Net income / (loss) attributable to the non-controlling interest |  |  |  |  |  |  |  |  | 24,248 | (1,519) | (1,524)
Net Income (Loss) Attributable to Parent | 14,751 | $ 1,655 | $ 901 | $ (3,102) | $ 774 | $ (1,216) | $ (410) | $ (1,202) | 14,205 | $ (2,054) | $ (2,463)
Insurance SPAC [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 41,035 |  |
Equity-based compensation |  |  |  |  |  |  |  |  | (11,700) |  |
Other operating |  |  |  |  |  |  |  |  | (2) |  |
Loss from equity method affiliates |  |  |  |  |  |  |  |  | (3,138) |  |
Net income / (loss) |  |  |  |  |  |  |  |  | 26,195 |  |
Less: Net income / (loss) attributable to the non-controlling interest |  |  |  |  |  |  |  |  | (9,328) |  |
Net income / (loss) - Operating LLC |  |  |  |  |  |  |  |  | 16,867 |  |
Less: Net income / (loss) attributable to the convertible non-controlling interest | 12,205 |  |  |  |  |  |  |  | 12,205 |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | 4,662 |  |
Insurance SPAC Pipe Sponsor LLC [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | (842) |  |
Equity-based compensation |  |  |  |  |  |  |  |  |  |  |
Other operating |  |  |  |  |  |  |  |  |  |  |
Loss from equity method affiliates |  |  |  |  |  |  |  |  |  |  |
Net income / (loss) |  |  |  |  |  |  |  |  | (842) |  |
Less: Net income / (loss) attributable to the non-controlling interest |  |  |  |  |  |  |  |  | 410 |  |
Net income / (loss) - Operating LLC |  |  |  |  |  |  |  |  | (432) |  |
Less: Net income / (loss) attributable to the convertible non-controlling interest | (313) |  |  |  |  |  |  |  | (313) |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | (119) |  |
Operating LLC [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 426 |  |
Equity-based compensation |  |  |  |  |  |  |  |  |  |  |
Other operating |  |  |  |  |  |  |  |  |  |  |
Loss from equity method affiliates |  |  |  |  |  |  |  |  |  |  |
Net income / (loss) |  |  |  |  |  |  |  |  | 426 |  |
Less: Net income / (loss) attributable to the non-controlling interest |  |  |  |  |  |  |  |  |  |  |
Net income / (loss) - Operating LLC |  |  |  |  |  |  |  |  | 426 |  |
Less: Net income / (loss) attributable to the convertible non-controlling interest | 308 |  |  |  |  |  |  |  | 308 |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | 118 |  |
All Insurance SPACs [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 40,619 |  |
Equity-based compensation |  |  |  |  |  |  |  |  | (11,700) |  |
Other operating |  |  |  |  |  |  |  |  | (2) |  |
Loss from equity method affiliates |  |  |  |  |  |  |  |  | (3,138) |  |
Net income / (loss) |  |  |  |  |  |  |  |  | 25,779 |  |
Less: Net income / (loss) attributable to the non-controlling interest |  |  |  |  |  |  |  |  | (8,918) |  |
Net income / (loss) - Operating LLC |  |  |  |  |  |  |  |  | 16,861 |  |
Less: Net income / (loss) attributable to the convertible non-controlling interest | $ 12,200 |  |  |  |  |  |  |  | 12,200 |  |
Net Income (Loss) Attributable to Parent |  |  |  |  |  |  |  |  | $ 4,661 |  |

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