Note 7 - Financial Instruments (Tables)
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3 Months Ended |
Mar. 31, 2025 |
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| Notes Tables |
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| Debt Securities, Trading, and Equity Securities, FV-NI [Table Text Block] |
| | | March 31, 2025 | | | December 31, 2024 | |
| Corporate bonds and redeemable preferred stock | | $ | 27,253 | | | | 27,043 | |
| Derivatives | | | 3,886 | | | | 4,836 | |
| Equity securities | | | 867 | | | | 965 | |
| Foreign government bonds | | | - | | | | 88 | |
| Municipal bonds | | | - | | | | 19,914 | |
| RMBS | | | 5 | | | | 5 | |
| SBA loans | | | 33,804 | | | | 28,328 | |
| U.S. government agency MBS and CMOs | | | 74,941 | | | | 45,911 | |
| U.S. government agency debt securities | | | 17,400 | | | | 21,242 | |
| U.S. Treasury securities | | | 2,410 | | | | - | |
| Investments-trading | | $ | 160,566 | | | $ | 148,332 | |
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| Security Sold Short [Table Text Block] |
| | | March 31, 2025 | | | December 31, 2024 | |
| Corporate bonds and redeemable preferred stock | | $ | 9,059 | | | $ | 7,342 | |
| Derivatives | | | 3,021 | | | | 4,050 | |
| Equity securities | | | 45 | | | | 83 | |
| U.S. government agency debt securities | | | - | | | | 40 | |
| U.S. Treasury securities | | | 20,531 | | | | 24,917 | |
| Trading securities sold, not yet purchased | | $ | 32,656 | | | $ | 36,432 | |
| | | March 31, 2025 | | | December 31, 2024 | |
| Equity securities | | $ | - | | | $ | 1,181 | |
| Share forward liabilities | | | - | | | | 470 | |
| Other investments sold, not yet purchased, at fair value | | $ | - | | | $ | 1,651 | |
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| Schedule of Other Investments at Fair Value [Table Text Block] |
| | | March 31, 2025 | | | December 31, 2024 | |
| Equity securities | | $ | 1,167 | | | $ | 1,954 | |
| Equity derivatives | | | 73 | | | | 73 | |
| Restricted equity securities | | | 11,165 | | | | 10,632 | |
| Corporate bonds and redeemable preferred stock | | | 530 | | | | 531 | |
| Notes receivable | | | 8,586 | | | | 11,250 | |
| Interests in SPVs | | | 1,565 | | | | 1,565 | |
| CREO JV | | | 6,503 | | | | 6,432 | |
| U.S. Insurance JV | | | 2,548 | | | | 2,825 | |
| Other investments, at fair value | | $ | 32,137 | | | $ | 35,262 | |
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