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Note 12 - Goodwill - Components of Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Balance | $ 1,091,048 | $ 1,088,984
Goodwill acquired during the year | 936,122 | 22,491
Other items | 0 | 2
Foreign exchange | (31,579) | (20,429)
Goodwill disposed during the year | (7,052) |
Balance | 1,988,539 | 1,091,048
Goodwill | 2,018,122 |
Accumulated impairment loss | (29,583) |
Goodwill, Ending Balance | 1,988,539 | 1,091,048
Investment Management [Member] |  |
Balance | 379,321 | 380,292
Goodwill acquired during the year | 735,011 | 0
Other items | (2,410) | 0
Foreign exchange | (1,904) | (971)
Goodwill disposed during the year | 0 |
Balance | 1,110,018 | 379,321
Goodwill | 1,110,018 |
Accumulated impairment loss | 0 |
Goodwill, Ending Balance | 1,110,018 | 379,321
Americas [Member] |  |
Balance | 359,945 | 337,727
Goodwill acquired during the year | 35,221 | 22,491
Other items | 0 | 2
Foreign exchange | (71) | (275)
Goodwill disposed during the year | 0 |
Balance | 395,095 | 359,945
Goodwill | 421,366 |
Accumulated impairment loss | (26,271) |
Goodwill, Ending Balance | 395,095 | 359,945
EMEA [Member] |  |
Balance | 259,764 | 275,546
Goodwill acquired during the year | 135,061 | 0
Other items | 2,410 | 0
Foreign exchange | (21,118) | (15,782)
Goodwill disposed during the year | (7,052) |
Balance | 369,065 | 259,764
Goodwill | 372,377 |
Accumulated impairment loss | (3,312) |
Goodwill, Ending Balance | 369,065 | 259,764
Asia Pacific [Member] |  |
Balance | 92,018 | 95,419
Goodwill acquired during the year | 30,829 | 0
Other items | 0 | 0
Foreign exchange | (8,486) | (3,401)
Goodwill disposed during the year | 0 |
Balance | 114,361 | 92,018
Goodwill | 114,361 |
Accumulated impairment loss | 0 |
Goodwill, Ending Balance | $ 114,361 | $ 92,018

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