Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2013

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Data

2013	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(In thousands, except per share data)
Total revenue	$	6,268	$	6,268	$	6,268	$	6,744
Loss from operations		(7,046)		(8,526)		(11,069)		(12,242)
Net loss		(7,228)		(8,620)		(11,177)		(12,382)
Net loss applicable to common stockholders		(9,025)		(10,418)		(11,744)		(12,382)
Net loss per share applicable to common stockholders – basic and diluted		(2.47)		(2.80)		(0.52)		(0.40)

2012	First Quarter		Second Quarter		Third Quarter		Fourth Quarter
	(In thousands, except per share data)
Total revenue	$	6,268	$	6,288	$	6,268	$	6,282
Loss from operations		(5,264)		(6,123)		(5,110)		(6,498)
Net loss		(4,631)		(5,513)		(4,645)		(5,313)
Net loss applicable to common stockholders		(6,429)		(7,311)		(6,443)		(7,109)
Net loss per share applicable to common stockholders – basic and diluted		(1.98)		(2.18)		(1.87)		(2.09)