Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2016

Quarterly Financial Information (Unaudited)

Summary of unaudited quarterly results of operations

Quarterly Financial Information (unaudited, in thousands, except share and per share data)

	Three Months Ended
	March 31, 2016			June 30, 2016			September 30, 2016			December 31, 2016
Operating expenses	$	9,206		$	9,396		$	8,283		$	8,673
Net loss		(9,418	)		(9,445	)		(8,419	)		(8,778	)
Net loss per share:
Basic and Diluted	$	(0.61	)	$	(0.61	)	$	(0.54	)	$	(0.47	)
Weighted-average common shares outstanding used in net loss per share:
Basic and Diluted		15,335,516			15,373,964			15,512,608			18,699,480

	Three Months Ended
	March 31, 2015			June 30, 2015			September 30, 2015			December 31, 2015
Operating expenses	$	6,360		$	7,765		$	8,201		$	9,333
Net loss		(6,500	)		(8,039	)		(8,485	)		(9,606	)
Net loss per share:
Basic and Diluted	$	(13.14	)	$	(8.07	)	$	(0.55	)	$	(0.63	)
Weighted-average common shares outstanding used in net loss per share:
Basic and Diluted		494,590			996,592			15,297,794			15,298,810