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Note 31 - Related Party Transactions - Routine Transactions Recognized in the Statements of Operations (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 |  |  |  |  |  |  |  |  | $ 770 | $ 564 | $ 744
Income (loss) from equity method affiliates | $ (244) | $ (1,371) | $ (1,233) | $ (107) | $ (188) | $ (109) | $ (248) | $ (8) | (2,955) | (553) |
Operating expense (income) |  |  |  |  |  |  |  |  | 1,150 | 428 | 491
Interest expense (income) |  |  |  |  |  |  |  |  | 5,462 | 3,952 | 4,645
Asset Management [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Management |  |  |  |  |  |  |  |  | 2,774 | 870 | 344
TBBK [Member] |  |  |  |  |  |  |  |  |  |  |
Net trading |  |  |  |  |  |  |  |  |  | 14 | 43
EuroDekania Management Limited [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  |  | 279 | 709
EuroDekania Management Limited [Member] | Asset Management [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Management |  |  |  |  |  |  |  |  |  | 236 | 235
SPAC Funds [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 183 | 30 | (8)
Income (loss) from equity method affiliates |  |  |  |  |  |  |  |  | 81 |  |
SPAC Funds [Member] | Asset Management [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Management |  |  |  |  |  |  |  |  | 2,406 | 331 | 51
U.S. Insurance JV [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 222 | 150 | 25
U.S. Insurance JV [Member] | Asset Management [Member] |  |  |  |  |  |  |  |  |  |  |
Asset Management |  |  |  |  |  |  |  |  | 368 | 303 | 58
CK Capital Partners B.V. [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 147 |  |
Income (loss) from equity method affiliates |  |  |  |  |  |  |  |  | 279 |  |
Insurance SPAC [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 95 | 95 |
Income (loss) from equity method affiliates |  |  |  |  |  |  |  |  | (3,138) | (553) |
Insurance SPAC II [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 80 |  |
Income (loss) from equity method affiliates |  |  |  |  |  |  |  |  | (486) |  |
Insurance SPAC III Sponsor Entities [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 20 |  |
Income (loss) from equity method affiliates |  |  |  |  |  |  |  |  | (34) |  |
FTAC II Sponsor [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  |  |  | 17
FTAC III Sponsor [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 9 | 10 | 1
FTAC IV Sponsor [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 5 |  |
Income (loss) from equity method affiliates |  |  |  |  |  |  |  |  | (7) |  |
FTAC V Sponsor [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 2 |  |
Income (loss) from equity method affiliates |  |  |  |  |  |  |  |  | (2) |  |
FTAC Olympus Sponsor [Member] |  |  |  |  |  |  |  |  |  |  |
Principal transactions and other income |  |  |  |  |  |  |  |  | 7 |  |
Income (loss) from equity method affiliates |  |  |  |  |  |  |  |  | (9) |  |
AOI [Member] |  |  |  |  |  |  |  |  |  |  |
Income (loss) from equity method affiliates |  |  |  |  |  |  |  |  | 360 |  |
Duane Morris [Member] |  |  |  |  |  |  |  |  |  |  |
Operating expense (income) |  |  |  |  |  |  |  |  | 1,194 | 462 | 501
FinTech Masala [Member] |  |  |  |  |  |  |  |  |  |  |
Operating expense (income) |  |  |  |  |  |  |  |  | (44) | (34) | (10)
CBF [Member] |  |  |  |  |  |  |  |  |  |  |
Interest expense (income) |  |  |  |  |  |  |  |  | 1,191 | 912 | 470
DGC Trust [Member] |  |  |  |  |  |  |  |  |  |  |
Interest expense (income) |  |  |  |  |  |  |  |  | 1,804 | 1,725 | 1,562
EBC [Member] |  |  |  |  |  |  |  |  |  |  |
Interest expense (income) |  |  |  |  |  |  |  |  | 289 | 218 | 228
Edward E. Cohen IRA [Member] |  |  |  |  |  |  |  |  |  |  |
Interest expense (income) |  |  |  |  |  |  |  |  | 47 | 398 | 417
JKD Capital Partners I, LTD [Member] |  |  |  |  |  |  |  |  |  |  |
Interest expense (income) |  |  |  |  |  |  |  |  | $ 2,131 | $ 699 | $ 1,968

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