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Business Acquisition - Additional Information (Detail) - USD ($)
shares in Thousands, $ in Thousands
 12 Months Ended
Jul. 01, 2015
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]      
Consolidated interest acquire in subsidiary   100.00%  
Other long-term liabilities   $ 16,910 $ 12,765
Shannon Systems      
Business Acquisition [Line Items]      
Consolidated interest acquire in subsidiary 100.00%    
Business acquisition shares issued, shares 1,560    
Business acquisition shares issued, value $ 7,640    
Business acquisition, cash paid to acquire interest   37,925  
Business acquisition costs   359  
Shannon Systems | Other Noncurrent Liabilities      
Business Acquisition [Line Items]      
Other long-term liabilities   $ 5,735