Annual report pursuant to Section 13 and 15(d)

Segment, Customer and Geographic Information (Textual) (Detail)

v3.6.0.2
Segment, Customer and Geographic Information (Textual) (Detail) - Segment
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Segment Reporting Information [Line Items]      
Number of reporting segments 1    
Revenue [Member]      
Segment Reporting Information [Line Items]      
Percentage of revenue represented by major customers 10.00% 10.00% 10.00%
Revenue from Services [Member]      
Segment Reporting Information [Line Items]      
Percentage of revenue represented by major customers 10.00% 10.00% 10.00%