Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2017

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

Stock options, RSUs, restricted stock awards, PSUs, and shares issuable upon the conversion of the Notes outstanding at June 30, 2017 and 2016, which are excluded from the computation of diluted net loss per share for the three and six months ended June 30, 2017 and 2016, are shown in the table below:



	Six Months Ended June 30,
	2017	2016
Options to purchase common stock	2,844,797	3,317,312
Non-vested RSAs and RSUs	534,373	389,636
Non-vested PSUs	487,847	745,942
Shares issuable upon conversion of the Notes	7,337,459	7,337,459
Potentially dilutive common shares	11,204,476	11,790,349

Schedule of Earnings Per Share, Basic and Diluted

A summary of the net loss per share calculation is shown below for the periods indicated (in thousands, except share and per share amounts):



	Three Months Ended June 30,						Six Months Ended June 30,
	2017			2016			2017			2016
Net loss	$	(24,604	)	$	(14,906	)	$	(43,128	)	$	(32,197	)
Common shares outstanding:
Historical common shares outstanding at beginning of period (1)	43,716,110			42,772,670			43,254,655			42,632,771
Weighted average common shares issued	18,308			31,783			358,818			118,117
Weighted average common shares outstanding — basic and diluted	43,734,418			42,804,453			43,613,473			42,750,888
Net loss per share — basic and diluted	$	(0.56	)	$	(0.35	)	$	(0.99	)	$	(0.75	)


(1)	RSAs that are issued but contingent on a one year vesting period have been excluded from this balance.