XML 57 R36.htm IDEA: XBRL DOCUMENT v3.3.1.900
Summary of Significant Accounting Policies - Additional Information (Detail)
 12 Months Ended
Dec. 31, 2015
USD ($)
Country
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Schedule Of Accounting Policies [Line Items]      
Number of Countries in which Entity Operates | Country 14    
Loss from foreign currency transactions $ 1,247,000 $ 1,382,000 $ 624,000
Cash equivalents maturity, Term Cash equivalents are high-quality short term money market instruments and commercial paper with maturities at acquisition of three months or less.    
Software development costs were capitalized $ 0 0 $ 0
Goodwill impairment $ 0 $ 0  
DigiNotar B.V. [Member]      
Schedule Of Accounting Policies [Line Items]      
Percentage of stock acquired by the Company 100.00%    
Patents [Member]      
Schedule Of Accounting Policies [Line Items]      
Estimated useful lives of assets 20 years    
Minimum [Member]      
Schedule Of Accounting Policies [Line Items]      
Estimated useful lives of assets 3 years    
Warranty for hardware purchase 1 year    
Extended product warranty period 1 year    
Minimum [Member] | Software Development Costs [Member]      
Schedule Of Accounting Policies [Line Items]      
Estimated economic life of product 2 years    
Minimum [Member] | Proprietary Technology [Member]      
Schedule Of Accounting Policies [Line Items]      
Estimated useful lives of assets 3 years    
Maximum [Member]      
Schedule Of Accounting Policies [Line Items]      
Estimated useful lives of assets 7 years    
Warranty for hardware purchase 2 years    
Extended product warranty period 4 years    
Maximum [Member] | Software Development Costs [Member]      
Schedule Of Accounting Policies [Line Items]      
Estimated economic life of product 5 years    
Maximum [Member] | Proprietary Technology [Member]      
Schedule Of Accounting Policies [Line Items]      
Estimated useful lives of assets 7 years