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Note 9 - Derivatives and Hedging Activities (Tables) | 12 Months Ended
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Dec. 31, 2018
Notes Tables |
Schedule of Derivative Instruments [Table Text Block] |
|  | As at December 31, |
|  | 2017 |  |  | 2018 |
Derivative liabilities : |  |  |  |  |  |  |  |
Derivatives designated as cash flow hedging instruments: |  |  |  |  |  |  |  |
Foreign exchange option contracts |  | $ | — |  |  | $ | 14 |
Foreign exchange forward contracts |  |  | — |  |  |  | 63 |
Total |  | $ | — |  |  | $ | 77 |
Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) [Table Text Block] |
|  | Year ended December 31, |
|  | 2016 |  |  | 2017 |  |  | 2018 |
Derivatives designated as cash flow hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange option contracts |  | $ | 67 |  |  | $ | 90 |  |  | $ | (146 | )
Foreign exchange forward contracts |  |  | 91 |  |  |  | 93 |  |  |  | (285 | )
|  | $ | 158 |  |  | $ | 183 |  |  | $ | (431 | )
Schedule of Net Investment Hedges in Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Year ended December 31, |
|  | 2016 |  |  | 2017 |  |  | 2018 |
Derivatives designated as cash flow hedging instruments: |  |  |  |  |  |  |  |  |  |  |  |
Foreign exchange option contracts |  | $ | (67 | ) |  | $ | (90 | ) |  | $ | 132 |
Foreign exchange forward contracts |  |  | (94 | ) |  |  | (99 | ) |  |  | 222 |
|  | $ | (161 | ) |  | $ | (189 | ) |  | $ | 354 |

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- Definition Tabular disclosure of the effective portion of the gains and losses on derivative instruments designated (and non-derivative instruments) designated and qualifying in cash flow hedges and net investment hedges that was recognized in other comprehensive income (loss) during the current period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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- Definition Tabular disclosure of pertinent information about a derivative or group of derivatives on a disaggregated basis, such as for individual instruments, or small groups of similar instruments. May include a combination of the type of instrument, risks being hedged, notional amount, hedge designation, related hedged item, inception date, maturity date, or other relevant item. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624163-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5580258-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41620-113959 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579245-113959 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41638-113959 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41678-113959 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41641-113959 Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(n)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5579240-113959 + Details
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- Definition Tabular disclosure of the effective portion of gains and losses on derivative instruments (and nonderivative instruments) designated and qualifying in net investment hedges recorded in accumulated other comprehensive income (loss) during the term of the hedging relationship and reclassified into earnings during the current period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CCC -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109998896-113959 + Details
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