Net Income (Loss) Per Share Attributable to Common Stockholders

12 Months Ended

Dec. 31, 2019

Net Income (Loss) Per Share Attributable to Common Stockholders

The following table presents the calculation of basic and diluted net loss per share attributable to common stockholders:


	Years Ended December 31,
	2019		2018		2017
Numerator:
Loss from continuing operations, net of income taxes	$	(9,007)	$	(9,230)	$	(19,700)
Total income (loss) from discontinued operations, net of income taxes	—		(136)		21,927
Net income (loss)	$	(9,007)	(9,366)		2,227

Denominator:
Weighted-average number of shares of common stock outstanding for basic and diluted net loss per share attributable to common stockholders	45,864,500		51,764,506		50,511,366

Basic and diluted net income (loss) per share:
Loss from continuing operations	$	(0.20)	$	(0.18)	$	(0.39)
Income from discontinued operations	—		—		0.43
Net income (loss)	$	(0.20)	$	(0.18)	$	0.04

The following securities were outstanding during the years presented below and have been excluded from the calculation of diluted net loss per share attributable to common stockholders per share because the effect is anti-dilutive:


	Years Ended December 31,
	2019	2018	2017

Stock option awards	5,327,756	6,348,251	6,311,059
Restricted stock unit awards	2,474,416	2,349,429	2,518,375
Total anti-dilutive securities outstanding	7,802,172	8,697,680	8,829,434