XML 62 R47.htm IDEA: XBRL DOCUMENT v3.7.0.1
Acquisition of Rivierawaves - Additional Information (Detail) - RivieraWaves - USD ($)
$ in Thousands
 12 Months Ended
Jul. 04, 2014
Dec. 31, 2016
Business Acquisition [Line Items]    
Percentage of voting interests acquired 100.00%  
Cost of acquired entity, purchase price $ 18,378  
Cost of acquired entity cash paid at closing 14,678  
Business acquisition, description of contingent consideration arrangements   The remaining amount of $3,700 payable upon the satisfaction of certain milestones (the "Contingent Consideration")
Business acquisition, contingent consideration liability 3,700  
Business acquisition, acquisition-related costs 310  
Business acquisition, description of acquired entity   In addition, as part of the acquisition, the Company established an employee retention plan for the RivieraWaves employees at a cost of approximately $3,400, to be payable on a semiannual basis for a period of two years after the Closing Date.
Employee retention plan cost $ 3,400  
Employee retention plan payment period 2 years