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Acquisition Acquisition (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jun. 24, 2018
Mar. 25, 2018
Jun. 24, 2018
Jun. 25, 2017
Jun. 26, 2016
Business Acquisition [Line Items]          
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual     $ 28,953    
Business Acquisition, Date of Acquisition Agreement     Mar. 06, 2018    
Business Acquisition, Name of Acquired Entity     Infineon Radio Frequency Power Business (RF Power)    
Business Combination, Consideration Transferred [Abstract]          
Cash consideration paid to stockholders         $ 13,797
Business Combination, Contingent Consideration, Liability         4,625
Post closing adjustments         181
Payment of acquisition-related contingent consideration     $ 1,850 $ 2,775 0
Total purchase price $ 2,000 $ 427,000 429,000   18,603
Business Acquisition, Goodwill, Expected Tax Deductible Amount 245,000   245,000    
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]          
Cash and cash equivalents         1,284
Accounts receivable         1,006
Inventories 22,500   22,500   143
Property and equipment 11,722   11,722   935
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets 433   433    
Other assets         270
Total tangible assets 432,612   432,612   3,638
Finite-lived intangible assets 149,000   149,000   23,739
Goodwill, Acquired During Period     248,957   2,483
Total intangible assets         26,222
Accounts payable (39)   (39)   (55)
Accrued expenses and liabilities         1,911
Other long-term liabilities         (9,291)
Total liabilities assumed (3,450)   (3,450)   (11,257)
Net assets acquired $ 429,162   429,162   $ 18,603
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life 13 years 9 months 13 days       7 years 10 months 8 days
Business Acquisition, Transaction Costs $ 3,700   3,700    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities (3,411)   (3,411)    
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual     (11,735)    
Patents [Member]          
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]          
Finite-lived intangible assets         $ 40
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life         20 years
Customer Relationships [Member]          
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]          
Finite-lived intangible assets 92,000   $ 92,000   $ 4,500
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life     15 years   4 years
Developed Technology [Member]          
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]          
Finite-lived intangible assets 44,000   $ 44,000   $ 11,403
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life     14 years   10 years
In Process Research and Development [Member]          
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]          
Finite-lived intangible assets         $ 7,565
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life         7 years
Non-compete Agreements [Member]          
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]          
Finite-lived intangible assets $ 12,000   $ 12,000   $ 231
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life     4 years   3 years
Power and RF Products [Member]          
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Less Noncontrolling Interest [Abstract]          
Goodwill, Acquired During Period     $ 248,957