Stockholders' Equity (Details) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Par Value	$ 0.0001	$ 0.0001
Series A Preferred Stock [Member]
Number of Shares Issued and Outstanding
Par Value	$ 0.0001
Conversion Ratio	N/A
Series B Convertible Preferred Stock [Member]
Number of Shares Issued and Outstanding	1	1
Par Value	$ 0.0001
Conversion Ratio	1:01
Series C Convertible Preferred Stock [Member]
Number of Shares Issued and Outstanding	1
Par Value	$ 0.0001
Conversion Ratio	1:01
Series D Preferred Stock [Member]
Number of Shares Issued and Outstanding	1,227,582
Par Value	$ 0.0001
Conversion Ratio	10:01
Series D-1 Convertible Preferred Stock [Member]
Number of Shares Issued and Outstanding	59,265
Par Value	$ 0.0001
Conversion Ratio	10:01
Series E Convertible Preferred Stock [Member]
Number of Shares Issued and Outstanding
Par Value	$ 0.0001
Conversion Ratio	1:01
Series F Convertible Preferred Stock [Member]
Number of Shares Issued and Outstanding
Par Value	$ 0.0001
Conversion Ratio	1:01
Series F-1 Convertible Preferred Stock [Member]
Number of Shares Issued and Outstanding	156,250
Par Value	$ 0.0001
Conversion Ratio	1:01
Series H Convertible Preferred Stock [Member]
Number of Shares Issued and Outstanding	459,043
Par Value	$ 0.0001
Conversion Ratio	10:01
Series I Preferred Stock [Member]
Number of Shares Issued and Outstanding	119,760
Par Value	$ 0.0001
Conversion Ratio	20:01