Annual report pursuant to Section 13 and 15(d)

Business Combination - Pro Forma Information (Details)

v3.8.0.1
Business Combination - Pro Forma Information (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]                      
Net revenue $ 113,721 $ 113,581 $ 104,175 $ 88,841 $ 87,136 $ 96,324 $ 101,687 $ 102,685 $ 420,318 $ 387,832 $ 300,360
Business Acquisition, Pro Forma Revenue                 456,822 499,801  
Net income (loss) (19,448) $ (9,167) $ 10,965 $ 8,463 8,348 $ 9,679 $ 22,584 $ 20,681 $ (9,187) $ 61,292 $ (42,331)
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Basic                 $ 0.25 $ (0.66)  
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax, Per Share, Diluted                 $ 0.24 $ (0.66)  
Weighted Average Number of Shares Outstanding, Basic                 66,252 63,781 53,378
Pro Forma Weighted Average Shares Outstanding, Diluted                   63,781  
Amortization of Intangible Assets                 $ 54,694 $ 16,084 $ 29,931
Exar and G.hn business [Member]                      
Business Acquisition [Line Items]                      
Business Combination, Transaction Costs                 10,039    
Business Acquisition, Pro Forma Historical Revenue                 36,504 111,969  
Business Acquisition, Pro Forma Revenue                 456,822 499,801  
Business Combination, Proforma Amortization of Step-Up of Inventory with Life Less than 1 Year                   25,532  
Earnings of acquiree since acquisition                 52,015    
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual                 85,730    
Net income (loss)                 (9,187) 61,292  
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual                 (8,916) (3,417)  
Business Acquisition Proforma Depreciation of Property, Plant and Equipment                 1,792 (645)  
Business Acquisition Proforma Amortization of Intangible Assets                 (8,045) (44,075)  
Business Acquisition Proforma Amortization of Intangible Assets                   4,100  
Business Combination Pro Forma Information Amortization of Inventory Step Up included in Consolidated Income Statement                 (25,557) (25,557)  
Business Acquisition, Transaction Costs $ 17,342       $ (17,342)       17,342 (17,342)  
Pro-Forma Interest Expense                 (2,863) (14,120)  
Business Acquisition, Proforma Acquisitions, Tax Provision                 1,002 0  
Net Loss                 $ 16,682 (42,345)  
Pro Forma Weighted Average Shares Outstanding, Diluted                 69,665    
Business Combination, Amortization of Intangible Assets and Inventory Step Up                 $ 37,807    
Exar Corporation [Member]                      
Business Acquisition [Line Items]                      
Pro Forma Impairment of Intangible Assets                 $ 0 $ 1,519  
Amortization [Member] | Exar and G.hn business [Member]                      
Business Acquisition [Line Items]                      
Business Acquisition Proforma Nonrecurring                   29632