Consolidated Statements of Comprehensive Loss (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net loss	$ (1,772)	$ (56,085)	$ (15,519)
Other comprehensive loss:
Unrealized (loss) / gain on securities	(41)	(272)	(48)
Other comprehensive loss	(41)	(272)	(48)
Total comprehensive loss	$ (1,813)	$ (56,357)	$ (15,567)