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Segment Information - Income by Segment and Reconciliation to Income Before Taxes (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Apr. 28, 2019 | Apr. 29, 2018
Segment Reporting Information [Line Items] |  |
Operating income (loss) | $ 12,817 | $ (3,097)
Items to reconcile segment operating income to consolidated income before taxes |  |
Share-based compensation | 11,328 | 35,516
Intangible amortization | 5,143 | 6,961
Changes in the fair value of contingent earn-out obligations | (2,161) | 0
Interest expense, net | 2,467 | 2,190
Non-operating expense, net | (1,043) | (190)
Income (loss) before taxes and equity in net losses of equity method investments | 11,393 | (5,097)
Corporate, Non-Segment [Member] |  |
Items to reconcile segment operating income to consolidated income before taxes |  |
Share-based compensation | 11,328 | 35,516
Intangible amortization | 5,143 | 6,961
Changes in the fair value of contingent earn-out obligations | (2,161) | 0
Other non-segment related expenses | 1,500 | 1,432
Interest expense, net | 2,467 | 2,190
Non-operating expense, net | (1,043) | (190)
Operating Segments [Member] |  |
Segment Reporting Information [Line Items] |  |
Operating income (loss) | 28,627 | 40,812
Semiconductor Products Group |  |
Segment Reporting Information [Line Items] |  |
Operating income (loss) | $ 28,627 | $ 40,812

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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