Annual report pursuant to Section 13 and 15(d)

Geographic and Other Financial Information (Unaudited) (Additional Information) (Detail)

v3.8.0.1
Geographic and Other Financial Information (Unaudited) (Additional Information) (Detail) - Customer Concentration Risk [Member]
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Sales Revenue, Net [Member]      
Concentration Risk, Percentage   10.00%  
Sales Revenue, Net [Member] | Toshiba Client Solutions Co. Ltd [Member]      
Concentration Risk, Percentage 18.00%    
Sales Revenue, Net [Member] | One Customer [Member]      
Concentration Risk, Percentage     18.00%
Accounts Receivable [Member]      
Concentration Risk, Percentage   10.00%  
Accounts Receivable [Member] | Toshiba Client Solutions Co. Ltd [Member]      
Concentration Risk, Percentage 25.00%    
Accounts Receivable [Member] | One Customer [Member]      
Concentration Risk, Percentage     89.00%
Accrued Project Revenue [Member] | Toshiba Client Solutions Co. Ltd [Member]      
Concentration Risk, Percentage 100.00%