Financing (Tables)

9 Months Ended

Sep. 30, 2014

Disclosure Text Block Supplement [Abstract]

Schedule of Aggregate Future Minimum Payments Due Under Loan and Security Agreement

 

Aggregate future minimum payments, reflecting payments on outstanding principal plus interest, due under the loan and security agreement as of September 30, 2014 were as follows (in thousands):

Year ending December 31,
2014	$	11
2015		200
2016		333
2017		333
2018		168
Total minimum payments		1,045
Less amount representing interest		(152	)
Notes payable, gross		893
Unamortized facility fee		(30	)
Accrual of final payment		—
Notes payable, balance		863
Less current portion of notes payable		(59	)
Non-current portion of notes payable	$	804

May 2013 Follow-on Underwritten Public Offering

On May 7, 2013, the Company closed a follow-on underwritten public offering, in which it sold 17,500,000 shares of common stock, together with matching warrants to purchase up to 17,500,000 shares of common stock, and pre-funded warrants to purchase up to 15,816,327 shares of common stock, together with matching warrants to purchase up to 15,816,327 shares of common stock, for aggregate gross proceeds of $16.5 million as follows:

	Combined Price to the Public (per share of common stock)		Common Stock		Pre-funded Warrants		Matching Warrants
Common stock and matching warrants sold (shares)	$	0.50		17,500,000		—		17,500,000
Pre-funded warrants and matching warrants sold (shares)	$	0.49		—		15,816,327		15,816,327
Total (shares)				17,500,000		15,816,327		33,316,327
Warrant exercise price (per share)		—		—	$	0.01	$	0.47
Term of warrant (years)		—		—		7.0		5.0