Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Estimated Useful Lives of Finite Lived Intangible Assets (Details)

v2.4.1.9
Summary of Significant Accounting Policies - Estimated Useful Lives of Finite Lived Intangible Assets (Details)
12 Months Ended
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of finite-lived intangible asset 6 years 8 months 12 days
Developed technologies  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of finite-lived intangible asset 3 years 2 months 12 days
Developed technologies | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of finite-lived intangible asset 3 years
Customer relationships  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of finite-lived intangible asset 9 years
Customer relationships | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of finite-lived intangible asset 1 year
Customer relationships | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of finite-lived intangible asset 10 years
Vendor relationships  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of finite-lived intangible asset 4 years 2 months 12 days
Vendor relationships | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Estimated useful life of finite-lived intangible asset 7 years