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Note 9 - Goodwill (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Goodwill [Table Text Block] |
|  | Americas |  |  | EMEA |  |  | Asia Pacific |  |  | Investment Management |  |  | Consolidated |
Balance, December 31, 2016 |  | $ | 126,417 |  |  | $ | 165,110 |  |  | $ | 44,446 |  |  | $ | 12,033 |  |  | $ | 348,006 |
Goodwill acquired during the year |  |  | 62,938 |  |  |  | 13,672 |  |  |  | 1,961 |  |  |  | - |  |  |  | 78,571 |
Other items |  |  | 1,175 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 1,175 |
Foreign exchange |  |  | 48 |  |  |  | 22,397 |  |  |  | 3,259 |  |  |  | 1,674 |  |  |  | 27,378 |
Balance, December 31, 2017 |  |  | 190,578 |  |  |  | 201,179 |  |  |  | 49,666 |  |  |  | 13,707 |  |  |  | 455,130 |
Goodwill acquired during the year |  |  | 18,014 |  |  |  | 79,364 |  |  |  | 1,954 |  |  |  | 366,350 |  |  |  | 465,682 |
Goodwill disposed during the year |  |  | - |  |  |  | (12,557 | ) |  |  | - |  |  |  | - |  |  |  | (12,557 | )
Other items |  |  | 44 |  |  |  | - |  |  |  | - |  |  |  | - |  |  |  | 44 |
Foreign exchange |  |  | (837 | ) |  |  | (14,234 | ) |  |  | (4,689 | ) |  |  | (645 | ) |  |  | (20,405 | )
Balance, December 31, 2018 |  |  | 207,799 |  |  |  | 253,752 |  |  |  | 46,931 |  |  |  | 379,412 |  |  |  | 887,894 |
Goodwill |  |  | 234,070 |  |  |  | 257,064 |  |  |  | 46,931 |  |  |  | 379,412 |  |  |  | 917,477 |
Accumulated impairment loss |  |  | (26,271 | ) |  |  | (3,312 | ) |  |  | - |  |  |  | - |  |  |  | (29,583 | )
|  | $ | 207,799 |  |  | $ | 253,752 |  |  | $ | 46,931 |  |  | $ | 379,412 |  |  | $ | 887,894 |

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