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Components and Allocation of Purchase Price (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Apr. 01, 2016
Dec. 31, 2015
Business Acquisition [Line Items]      
Goodwill $ 31,161   $ 14,346
Atoll GmbH      
Business Acquisition [Line Items]      
Cash and cash equivalents   $ 1,409  
Accounts receivable   697  
Inventory   155  
Other current assets   169  
Fixed assets, net   114  
Business combination, intangible assets   7,561  
Deferred tax assets   885  
Accounts payable and other liabilities assumed   (599)  
Deferred tax liabilities   (2,202)  
Goodwill   17,077  
Net assets acquired   25,266  
Atoll GmbH | Customer relationships      
Business Acquisition [Line Items]      
Business combination, intangible assets   5,318  
Atoll GmbH | Technology - developed      
Business Acquisition [Line Items]      
Business combination, intangible assets   2,175  
Atoll GmbH | Non-competition agreements      
Business Acquisition [Line Items]      
Business combination, intangible assets   57  
Atoll GmbH | Trademark/ tradename      
Business Acquisition [Line Items]      
Business combination, intangible assets   $ 11