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
Mar. 31, 2018
Jun. 30, 2017
Jun. 09, 2017
Preliminary Purchase Price Allocation      
Goodwill $ 349,998 $ 349,526  
Privately-Held Design and Manufacturing Company      
Preliminary Purchase Price Allocation      
Intangible assets 17,660    
Goodwill 14,764   $ 14,800
Assets acquired (including cash and marketable securities of $3.2 million) 5,981    
Liabilities assumed (1,334)    
Fair value of net assets acquired 37,071    
Cash and marketable securities $ 3,200