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Note 5 - Derivative Instruments and Hedging Activities - Fair Value Adjustments of Forward Currency Forward Contracts Not Designated as Hedges (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Gain (loss) on settlement | $ (441) | $ 79
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] |  |
Gain (loss) on settlement |  | (39)
Gain (loss) on change in fair value |  | $ 118
Foreign Exchange Forward [Member] | Not Designated as Hedging Instrument [Member] | Maximum [Member] |  |
Gain (loss) on settlement | (93) |
Gain (loss) on change in fair value | $ (348) |

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959 + Details
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- Definition The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 + Details
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- Details
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- Details
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- Details
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