The Company and Summary of Significant Accounting Policies - Sale of Domain (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Jun. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]          
Gain on sale of domain $ 0 $ 1,000 $ 0 $ 1,000 $ 0