Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Schedule of Anti-dilutive Weighted-Average Equity Instruments Excluded from Calculation of Diluted Net Loss Per Share

The following weighted-average equity instruments were excluded from the calculation of diluted net loss per share because their effect would have been anti-dilutive for the periods presented:

	Three Months Ended
	March 31, 2019		March 31, 2018
Awards under equity incentive plan		3,133,827		1,786,438
Nonvested restricted shares and restricted stock units		143,125		207,768
Warrants to purchase common stock		901,502		1,291,645
Total		4,178,454		3,285,851

Reconciles Basic Earnings Per Share and Diluted Earnings Per Share of Common Stock

The following table reconciles basic earnings per share of common stock for the three months ended March 31, 2019 and 2018:

	Three Months Ended
	March 31, 2019			March 31, 2018
Net loss	$	(12,112	)	$	(26,849	)
Net loss attributable to common stockholders		(12,112	)		(26,849	)
Undistributed earnings and net loss attributable to common stockholders, basic and diluted		(12,112	)		(26,849	)
Weighted average common shares outstanding, basic and diluted		36,016,406			31,318,746
Basic and diluted EPS	$	(0.34	)	$	(0.86	)