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Note 12 - Goodwill - Components of Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2020
Balance | $ 949,221 | $ 887,894 |
Goodwill | 117,984 | 58,221 |
Other items | 150 | 4,734 |
Foreign exchange | 21,629 | (1,628) |
Balance | 1,088,984 | 949,221 |
Goodwill |  |  | $ 1,118,567
Accumulated impairment loss |  |  | (29,583)
Goodwill (note 12) | 949,221 | 887,894 | 1,088,984
Investment Management [Member] |  |  |
Balance | 379,151 | 379,412 |
Goodwill |  |  |
Other items |  |  |
Foreign exchange | 1,141 | (261) |
Balance | 380,292 | 379,151 |
Goodwill |  |  | 380,292
Accumulated impairment loss |  |  |
Goodwill (note 12) | 380,292 | 379,151 | 380,292
Americas [Member] |  |  |
Balance | 220,410 | 207,799 |
Goodwill | 117,984 | 11,970 |
Other items |  | 330 |
Foreign exchange | (667) | 311 |
Balance | 337,727 | 220,410 |
Goodwill |  |  | 363,998
Accumulated impairment loss |  |  | (26,271)
Goodwill (note 12) | 337,727 | 220,410 | 337,727
EMEA [Member] |  |  |
Balance | 257,333 | 253,752 |
Goodwill |  | 846 |
Other items |  | 4,404 |
Foreign exchange | 18,213 | (1,669) |
Balance | 275,546 | 257,333 |
Goodwill |  |  | 278,858
Accumulated impairment loss |  |  | (3,312)
Goodwill (note 12) | 275,546 | 257,333 | 275,546
Asia Pacific [Member] |  |  |
Balance | 92,327 | 46,931 |
Goodwill |  | 45,405 |
Other items | 150 |  |
Foreign exchange | 2,942 | (9) |
Balance | 95,419 | 92,327 |
Goodwill |  |  | 95,419
Accumulated impairment loss |  |  |
Goodwill (note 12) | $ 95,419 | $ 92,327 | $ 95,419

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