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Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

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Name of the acquired entity.

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- Definition

The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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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 liability recognized arising from contingent consideration in a business combination.

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Amount of assets acquired at the acquisition date.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Acquisition Acquisition (Details) - USD ($) $ in Thousands	3 Months Ended					12 Months Ended
Acquisition Acquisition (Details) - USD ($) $ in Thousands	Sep. 23, 2018	Jun. 24, 2018	Mar. 25, 2018	Sep. 24, 2017	Sep. 25, 2016	Jun. 24, 2018	Mar. 06, 2018	Jun. 25, 2017
Purchase Price Allocation [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life			13 years 9 months 16 days
Business Acquisition, Goodwill, Expected Tax Deductible Amount							$ 245,000
Business Acquisition, Transaction Costs	$ 120
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory							22,500
Business Acquisition, Date of Acquisition Agreement			Mar. 06, 2018
Business Acquisition, Name of Acquired Entity			Infineon Technologies AG (Infineon) Radio Frequency Power Business (RF Power)
Business Combination, Consideration Transferred		$ 2,000	$ 427,000			$ 429,000
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	0			$ 1,850	$ 2,800
Cash consideration paid to shareholders					$ 13,800
Business Combination, Contingent Consideration, Liability								$ 4,600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment							11,722
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Other							433
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets							432,612
Finite-Lived Intangible Assets, Gross							149,000
Goodwill	$ 620,330	$ 620,330				$ 620,330
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable							(39)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities							(3,411)
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities							(3,450)
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net							429,162
Developed technology
Purchase Price Allocation [Line Items]
Finite-Lived Intangible Assets, Gross							44,000
Finite-Lived Intangible Asset, Useful Life	14 years
Customer relationships
Purchase Price Allocation [Line Items]
Finite-Lived Intangible Assets, Gross							92,000
Finite-Lived Intangible Asset, Useful Life	15 years
Leases, Acquired-in-Place, Market Adjustment [Member]
Purchase Price Allocation [Line Items]
Finite-Lived Intangible Assets, Gross							1,000
Leases, Acquired-in-Place [Member]
Purchase Price Allocation [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Non-compete agreements
Purchase Price Allocation [Line Items]
Finite-Lived Intangible Assets, Gross							$ 12,000
Finite-Lived Intangible Asset, Useful Life	4 years