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Note 12 - Derivatives and Hedging Activities - Effective Portion of the Gains and Losses on Derivative Instruments Designated (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Gain (loss) recognized in other comprehensive income (loss), Effective portion, Net, Total | $ 83 | $ 21 | $ 401 | $ (259)
Derivatives Designated as Cash Flow Hedging Instruments [Member] |  |  |  |
Gain (loss) recognized in other comprehensive income (loss), Effective portion, Net, Total | 83 | 21 | 401 | (259)
Derivatives Designated as Cash Flow Hedging Instruments [Member] | Foreign Exchange Option Contracts [Member] |  |  |  |
Gain (loss) recognized in other comprehensive income (loss), Effective portion, Net, Total | 33 | (2) | 62 | (128)
Derivatives Designated as Cash Flow Hedging Instruments [Member] | Foreign Exchange Forward Contracts [Member] |  |  |  |
Gain (loss) recognized in other comprehensive income (loss), Effective portion, Net, Total | $ 50 | $ 23 | $ 339 | $ (131)

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- Definition Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=118930883&loc=d3e637-108580 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=109978405&loc=d3e80720-113993 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669646-108580 + Details
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