CONSOLIDATED STATEMENTS OF REDEEMABLE CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) (Temporary Equity) - 12 months ended Dec. 31, 2013 - USD ($) $ in Thousands	Redeemable Convertible Preferred Stock	Total
Balance at Dec. 31, 2012	$ 116,313
Balance (in shares) at Dec. 31, 2012	15,293,960
Increase (Decrease) in Stockholders' Equity
Conversion of redeemable convertible preferred stock into common stock	$ (116,313)	$ 116,313
Conversion of redeemable convertible preferred stock into common stock (in shares)	(15,293,960)
Balance at Dec. 31, 2013
Balance (in shares) at Dec. 31, 2013