Annual report pursuant to Section 13 and 15(d)

Business Combination Business Combination (Details)

v3.10.0.1
Business Combination Business Combination (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
May 12, 2017
Apr. 04, 2017
Jul. 01, 2016
Apr. 28, 2016
Dec. 31, 2018
Dec. 31, 2017
Business Acquisition [Line Items]            
Goodwill, Purchase Accounting Adjustments         $ 338  
Exar Corporation [Member]            
Business Acquisition [Line Items]            
Business Acquisition, Name of Acquired Entity Exar Corporation          
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents $ 235,800          
Proceeds from Issuance of Debt 416,800          
Long-term Debt, Gross 425,000          
Exar Corporation [Member] | Cash in lieu of equity [Member]            
Business Acquisition [Line Items]            
Total consideration given 12,700          
Wireless Infrastructure Backhaul Business of Broadcom Corporation [Member]            
Business Acquisition [Line Items]            
Goodwill, Purchase Accounting Adjustments           $ 341
Cash [Member] | Exar Corporation [Member]            
Business Acquisition [Line Items]            
Total consideration given $ 688,100          
Cash [Member] | G.hn business of Marvell [Member]            
Business Acquisition [Line Items]            
Total consideration given   $ 21,000        
Cash [Member] | Wireless Infrastructure Backhaul Business of Broadcom Corporation [Member]            
Business Acquisition [Line Items]            
Total consideration given     $ 80,000 $ 21,000    
Common Stock [Member] | Exar Corporation [Member]            
Business Acquisition [Line Items]            
Business Acquisition, Share Price $ 13.00