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Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Comprehensive Income (Loss), Net of Tax, Attributable to Parent | $ 122,121 | $ 124,086 | $ 120,573
Net income | 130,499 | 119,138 | 121,274
Other comprehensive (loss): |  |  |
Foreign currency translation adjustment, Pre-tax | (7,983) | 6,836 | (2,147)
Foreign currency translation adjustment, Tax | 0 | 0 | 0
Foreign currency translation adjustment, Net | (7,983) | 6,836 | (2,147)
Gains on cash flow hedging derivatives, Pre-tax | 1,150 | (1,282) | 797
Gains on cash flow hedging derivatives, Tax | (276) | 468 | (291)
Gains on cash flow hedging derivatives, Net | 874 | (814) | 506
Unrealized gain (loss) on marketable securities, Pre-tax | 124 | 183 | 2,052
Unrealized gain (loss) on marketable securities, Tax | (30) | (67) | (749)
Unrealized gain (loss) on marketable securities, Net | 94 | 116 | 1,303
Unrealized Gain (Loss) on Cash Flow Hedging Instruments | 874 | (814) | 506
Total Other Comprehensive Income (Loss), Pre-tax | (6,709) | 5,737 | 702
Total Other Comprehensive Income (Loss), Tax | (306) | 401 | (1,040)
Total Other Comprehensive Income(Loss), Net | (7,015) | 6,138 | (338)
Comprehensive income | 123,484 | 125,276 | 120,936
Less: net income attributable to noncontrolling interest | $ 1,363 | $ 1,190 | $ 363

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- Definition Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e557-108580 + Details
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- Definition The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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