Amortization of Acquisition Related Fair Value Adjustments

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The aggregate expense charged against earnings to allocate the cost of intangible assets and impairments (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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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.

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- Definition

Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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Amount of impairment loss on investment in equity security without readily determinable fair value.

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- Definition

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

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The net result for the period of deducting operating expenses from operating revenues.

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No definition available.

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The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation.

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Amount of income (expense) related to nonoperating activities, classified as other.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Segment Information - Income by Segment and Reconciliation to Income Before Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 27, 2019	Oct. 28, 2018	Jul. 29, 2018	Apr. 29, 2018	Jan. 28, 2018	Oct. 29, 2017	Jul. 30, 2017	Apr. 30, 2017	Jan. 27, 2019	Jan. 28, 2018	Jan. 29, 2017
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)	$ 26,771	$ 41,867	$ 32,936	$ (3,097)	$ 14,009	$ 17,579	$ 18,892	$ 18,256	$ 98,477	$ 68,736	$ 84,081
Share-based compensation									73,859	47,936	30,828
Investment impairments		$ 30,000				$ 4,300			30,000	4,250	0
Changes in the fair value of contingent earn-out obligations									(9,419)	3,892	(215)
Non-operating (income) expense, net									3,823	3,348	(1,721)
Income before taxes									63,098	59,871	73,060
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)									186,975	160,810	149,677
Operating Segments \| Semiconductor Products Group
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)									186,975	160,810	126,271
Operating Segments \| All others
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Operating income (loss)									0	0	23,406
Segment Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Share-based compensation									73,859	47,936	30,828
Intangible amortization and impairments									26,649	27,867	25,301
Investment impairments									30,000	4,250	0
Changes in the fair value of contingent earn-out obligations									(9,419)	3,892	(215)
Other non-segment related expenses									(2,591)	12,189	7,455
Amortization of fair value adjustments related to acquired property, plant and equipment									0	190	2,227
Interest expense, net									9,202	7,963	9,300
Non-operating (income) expense, net									$ (3,823)	$ (3,348)	$ 1,721