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Note 14 - Income Tax - Provision for (Recovery of) Income Tax (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017
Current | $ 47,123 | $ 43,576
Deferred | 6,137 | 18,331
Total | 53,260 | 61,907
Domestic Tax Authority [Member] | Canada Revenue Agency [Member] |  |
Current, Canada | 5,134 | 4,031
Deferred, Canda | 1,689 | 3,185
Foreign Tax Authority [Member] | Internal Revenue Service (IRS) [Member] |  |
Current, United States and Other Foreign | 1,768 | 3,235
Deferred, United States and Other Foreign | 10,732 | 20,657
Foreign Tax Authority [Member] | Other Foreign Tax Authorities [Member] |  |
Current, United States and Other Foreign | 40,221 | 36,310
Deferred, United States and Other Foreign | $ (6,284) | $ (5,511)

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