Consolidated Statements of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Consolidated Statements of Comprehensive Loss
Net loss	$ (2,243)	$ (1,675)	$ (7,675)	$ (15,582)
Series F preferred stock deemed dividend	(15,849)		(15,849)
Net loss attributable to common stockholders	(18,092)	(1,675)	(23,524)	(15,582)
Other comprehensive loss:
Change in unrealized gain during the period on short-term investments available for sale				7
Foreign currency translation adjustments	50	(25)	(100)	(36)
Comprehensive loss attributable to common stockholders	$ (18,042)	$ (1,700)	$ (23,624)	$ (15,611)