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Note 10 - Goodwill - Components of Goodwill (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2016
Balance | $ 305,680 | $ 286,121 |  |
Goodwill | 52,954 | 43,373 | $ 99,561 |
Goodwill disposed during the year |  | (111) |  |
Foreign exchange | (9,759) | (23,703) |  |
Balance | 348,006 | 305,680 | 286,121 |
Other items | (869) |  |  |
Goodwill |  |  |  | $ 377,589
Accumulated impairment loss |  |  |  | (29,583)
Goodwill (note 10) | 348,006 | 305,680 | 286,121 | 348,006
Americas [Member] |  |  |  |
Balance | 106,797 | 69,820 |  |
Goodwill | 19,665 | 39,627 |  |
Goodwill disposed during the year |  |  |  |
Foreign exchange | 558 | (2,650) |  |
Balance | 126,417 | 106,797 | 69,820 |
Other items | (603) |  |  |
Goodwill |  |  |  | 152,688
Accumulated impairment loss |  |  |  | (26,271)
Goodwill (note 10) | 106,797 | 69,820 | 69,820 | 126,417
EMEA [Member] |  |  |  |
Balance | 154,356 | 167,304 |  |
Goodwill | 33,289 | 3,322 |  |
Goodwill disposed during the year |  | (111) |  |
Foreign exchange | (10,236) | (16,159) |  |
Balance | 177,143 | 154,356 | 167,304 |
Other items | (266) |  |  |
Goodwill |  |  |  | 180,455
Accumulated impairment loss |  |  |  | (3,312)
Goodwill (note 10) | 154,356 | 167,304 | 167,304 | 177,143
Asia Pacific [Member] |  |  |  |
Balance | 44,527 | 48,997 |  |
Goodwill |  | 424 |  |
Goodwill disposed during the year |  |  |  |
Foreign exchange | (81) | (4,894) |  |
Balance | 44,446 | 44,527 | 48,997 |
Other items |  |  |  |
Goodwill |  |  |  | 44,446
Accumulated impairment loss |  |  |  |
Goodwill (note 10) | $ 44,527 | $ 48,997 | $ 48,997 | $ 44,446

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