Quarterly report pursuant to Section 13 or 15(d)

Preferred Stock (Details)

v2.4.1.9
Preferred Stock (Details)
Mar. 31, 2015
Dec. 31, 2014
Class of Stock [Line Items]    
Preferred Stock, Shares Outstanding 0us-gaap_PreferredStockSharesOutstanding  
Series A Preferred Stock [Member]    
Class of Stock [Line Items]    
Preferred Stock, Shares Outstanding   2,483,692us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesAPreferredStockMember
Series B Preferred Stock [Member]    
Class of Stock [Line Items]    
Preferred Stock, Shares Outstanding   8,073,508us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesBPreferredStockMember
Series C Preferred Stock [Member]    
Class of Stock [Line Items]    
Preferred Stock, Shares Outstanding   3,351,156us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesCPreferredStockMember
Series D Preferred Stock [Member]    
Class of Stock [Line Items]    
Preferred Stock, Shares Outstanding   19,557,392us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_SeriesDPreferredStockMember
Convertible Preferred Stock [Member]    
Class of Stock [Line Items]    
Preferred Stock, Shares Outstanding   33,465,748us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= us-gaap_ConvertiblePreferredStockMember