Selected Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Results from Operations

Selected quarterly results from operations for the years ended December 31, 2015 and 2014 are as follows (in thousands except per share amounts):

	2015 Quarter Ended
	March 31			June 30			September 30			December 31
Revenue	$	—		$	—		$	—		$	—
Net loss		(12,006	)		(12,078	)		(11,647	)		(11,574	)
Basic and diluted net loss per share		(0.28	)		(0.28	)		(0.26	)		(0.26	)
	2014 Quarter Ended
	March 31			June 30			September 30			December 31
Revenue	$	—		$	—		$	—		$	—
Net loss		(11,537	)		(12,261	)		(10,941	)		(12,190	)
Basic and diluted net loss per share		(0.27	)		(0.28	)		(0.25	)		(0.28	)