Quarterly report pursuant to Section 13 or 15(d)

Business Combination - Purchase Price Allocation (Details)

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Business Combination - Purchase Price Allocation (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Jun. 30, 2017
Jun. 09, 2017
Preliminary Purchase Price Allocation      
Goodwill $ 349,678 $ 349,526  
Privately-Held Design and Manufacturing Company      
Preliminary Purchase Price Allocation      
Intangible assets 17,660    
Goodwill 14,451   $ 14,500
Assets acquired (including cash and marketable securities of $3.2 million) 6,294    
Liabilities assumed (1,334)    
Fair value of net assets acquired $ 37,071    
Cash and marketable securities     $ 3,200