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The Company and Summary of Significant Accounting Policies (Details 2) (USD $)
 3 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Mar. 31, 2014
Developed technology
Dec. 31, 2013
Developed technology
Mar. 31, 2014
Developed technology
Minimum
Dec. 31, 2013
Developed technology
Minimum
Mar. 31, 2014
Developed technology
Maximum
Dec. 31, 2013
Developed technology
Maximum
Mar. 31, 2014
Patent license
Dec. 31, 2013
Patent license
Revenue Recognition                      
Threshold purchase return percentage by distributors for slow, non-moving or obsolete inventory 10.00%                    
Specified period for return of threshold percentage of purchases by distributors for slow, non-moving or obsolete inventory 6 months                    
Support and maintenance revenue recognition period 12 months                    
Licensing revenue $ 41,000 $ 188,000                  
Intangible assets                      
Life           3 years 3 years 5 years 5 years 7 years 7 years
Gross Carrying Amount 10,020,000   10,020,000 9,240,000 9,240,000         780,000 780,000
Accumulated Amortization 8,615,000   8,365,000 8,364,000 8,142,000         251,000 223,000
Net Carrying Value 1,405,000   1,655,000 876,000 1,098,000         529,000 557,000
Estimated aggregate amortization expense to be recognized in future                      
Remainder of 2014 800,000                    
2015 300,000                    
2016 100,000                    
2017 100,000                    
2018 $ 100,000                    
Per Share Amounts                      
Anti-dilutive securities excluded from computation of diluted net loss per share 10,173,000 9,970,000