Condensed Consolidated Balance Sheets Condensed Consolidated Balance Sheets (Paranthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Assets
Allowance for doubtful accounts	$ 0	$ 0
Liabilities, Convertible Preferred Stock and Stockholders' Deficit
Common stock par value	$ 0.0003	$ 0.0003
Common stock shares authorized	100,000,000	30,423,297
Common stock shares issued		3,780,490
Common stock shares outstanding		3,780,490
Convertible Preferred Stock
Liabilities, Convertible Preferred Stock and Stockholders' Deficit
Convertible preferred stock par value	$ 0.0003	$ 0.0003
Convertible preferred stock shares authorized	0	26,103,736
Convertible preferred stock shares issued	0	12,171,980
Convertible preferred stock shares outstanding	0	12,171,980
Preferred stock par value	$ 0.0003	$ 0.0003
Preferred stock shares authorized	0	26,103,736
Preferred stock shares issued	0	12,171,980
Preferred stock shares outstanding	0	12,171,980
Preferred Stock
Liabilities, Convertible Preferred Stock and Stockholders' Deficit
Convertible preferred stock par value	$ 0.0003	$ 0.0003
Convertible preferred stock shares authorized	5,000,000	0
Convertible preferred stock shares issued	0	0
Convertible preferred stock shares outstanding	0	0
Preferred stock par value	$ 0.0003	$ 0.0003
Preferred stock shares authorized	5,000,000	0
Preferred stock shares issued	0	0
Preferred stock shares outstanding	0	0