Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [Abstract]

Computation of basic and diluted net loss per share

The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share data): 

	Three Months Ended   June 30,						Six Months Ended   June 30,
	2019			2018			2019			2018
Net loss	$	(24,060	)	$	(6,622	)	$	(38,425	)	$	(15,677	)
Weighted-average common shares outstanding	105,485			101,150			105,139			100,862
Net loss per share - basic and diluted	$	(0.23	)	$	(0.07	)	$	(0.37	)	$	(0.16	)

Anti-dilutive shares excluded from the calculation of diluted net loss per share

The following table presents the number of anti-dilutive shares excluded from the calculation of diluted net loss per share at June 30, 2019 and 2018 (in thousands):

	June 30,
	2019	2018
Options to purchase common stock	13,080	16,456
Common stock warrants	1,459	1,459
Non-vested restricted stock unit awards	6,701	3,727
Total shares excluded from net loss per share	21,240	21,642