Consolidated Statements of Operations and Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Expenses:
Research and development	$ 4,362	$ 1,353
General and administrative	13,577	9,386
Total expenses	17,939	10,739
Loss from operations	(17,939)	(10,739)
Other income:
Adjustments to fair value of derivative liabilities	0	2,998
Other income, net	4	4
Net loss and comprehensive loss	(17,935)	(7,737)
Preferred stock dividends earned	(801)	(780)
Net loss attributable to common stockholders	$ (18,736)	$ (8,517)
Net loss per share basic and diluted	$ (41.24)	$ (41.77)
Shares used in computing basic and diluted net loss per share	454,337	203,924