Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2018

Earnings Per Share [Abstract]

Computation of basic and diluted net loss per share for continuing and discontinued operations

The following table presents the computation of basic and diluted net loss per share for continuing and discontinued operations (in thousands, except per share amounts):

	Three Months Ended June 30,						Six Months Ended June 30,
	2018			2017			2018			2017
Numerator:
Loss from continuing operations	$	(7,064	)	$	(2,629	)	$	(8,918	)	$	(8,053	)
Loss from discontinued operations		(12	)		(68	)		(74	)		(159	)
Net loss	$	(7,076	)	$	(2,697	)	$	(8,992	)	$	(8,212	)
Denominator:
Weighted average common shares outstanding		34,030			11,102			27,656			10,102
Weighted average unvested common shares subject    to repurchase		—			(55	)		—			(69	)
Weighted average common shares outstanding—basic and diluted		34,030			11,047			27,656			10,033
Net loss per share, basic and diluted:
Continuing operations	$	(0.21	)	$	(0.24	)	$	(0.32	)	$	(0.80	)
Discontinued operations	$	(0.00	)	$	(0.01	)	$	(0.00	)	$	(0.02	)
Net loss per share, basic and diluted	$	(0.21	)	$	(0.24	)	$	(0.33	)	$	(0.82	)

Weighted-average anti-dilutive securities not included in diluted net loss per share

The anti-dilutive securities not included in diluted net loss per share were as follows calculated on a weighted average basis (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Options to purchase common stock		446		1,444		390		1,298
Unvested restricted share awards		—		55		—		69
Series A Convertible Preferred Stock		2,022		7,383		2,262		3,796
Convertible Notes		942		—		1,180		—
Warrants to purchase common stock		2,530		87		1,097		1,132
Total		5,940		8,969		4,929		6,295