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Acquisitions - ViDi Systems S.A. Purchase Price Allocation (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Apr. 04, 2017
Business Acquisition [Line Items]        
Goodwill $ 243,445 $ 113,208 $ 113,208  
ViDi Systems S.A. [Member]        
Business Acquisition [Line Items]        
Cash       $ 146
Accounts receivable       425
Prepaid expenses and other current assets       129
Property, plant, and equipment       40
Deferred income tax asset       620
Accounts payable       (98)
Accrued expenses       (716)
Deferred income tax liability       (1,008)
Goodwill       18,333
Purchase price       23,015
Non-compete agreements | ViDi Systems S.A. [Member]        
Business Acquisition [Line Items]        
Finite-lived intangible assets       370
Technology-Based Intangible Assets [Member] | ViDi Systems S.A. [Member]        
Business Acquisition [Line Items]        
Finite-lived intangible assets       $ 4,774