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Business Acquisitions - Narrative (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Aug. 11, 2017
Nov. 30, 2017
Dec. 31, 2017
Dec. 31, 2017
Dec. 31, 2016
Business Acquisition [Line Items]          
Amortization of intangible assets       $ 10,653 $ 6,618
Unpaid purchase price for business acquisition       1,000 $ 0
Astro Gaming          
Business Acquisition [Line Items]          
Payments to acquire business, gross $ 85,000        
Inventory adjustment due to purchase accounting $ 800        
Business acquisition related costs     $ 300 1,300  
Net sales contributed by acquiree     $ 33,500 $ 36,200  
Percent of net sales contributed by acquiree     4.00% 2.00%  
Small Acquisition          
Business Acquisition [Line Items]          
Consideration transfered   $ 5,200      
Cash acquired   900      
Unpaid purchase price for business acquisition   $ 1,000      
Developed technology | Astro Gaming          
Business Acquisition [Line Items]          
Amortization of intangible assets     $ 800 $ 1,200  
Customer relationships and trade name | Astro Gaming          
Business Acquisition [Line Items]          
Amortization of intangible assets     $ 1,300 $ 2,000  
Level 3 | Developed technology | Astro Gaming          
Business Acquisition [Line Items]          
Royalty rate for fair value measurement 10.00%        
Discount rate for value measurement 13.00%        
Level 3 | Customer relationships | Astro Gaming          
Business Acquisition [Line Items]          
Discount rate for value measurement 13.00%        
Level 3 | Trade name | Astro Gaming          
Business Acquisition [Line Items]          
Royalty rate for fair value measurement 2.00%        
Discount rate for value measurement 13.00%