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Segment Information - Schedule of Long-lived Assets, Net by Location (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]    
Total property and equipment, net and intangible assets, net $ 12,870 $ 10,862
United States
   
Segment Reporting Information [Line Items]    
Total property and equipment, net and intangible assets, net 10,625 8,599
Japan
   
Segment Reporting Information [Line Items]    
Total property and equipment, net and intangible assets, net 300 572
Asia Pacific, excluding Japan
   
Segment Reporting Information [Line Items]    
Total property and equipment, net and intangible assets, net 1,839 1,657
EMEA
   
Segment Reporting Information [Line Items]    
Total property and equipment, net and intangible assets, net $ 106 $ 34