Net (Loss) Income per Common Share (Tables)

12 Months Ended

Dec. 31, 2017

Net Loss per Common Share [Abstract]

Computation of Basic and Diluted Net Income (Loss) Per Share

The following table sets forth the computation of basic and diluted net loss per common share for the periods indicated:

	Year Ended
	December 31,
	2017		2016
Basic and diluted net loss per common share calculation:
Net loss	$	(12,838,000)	$	(18,838,000)
Excess of fair value of consideration transferred on conversion of Series B redeemable convertible preferred stock		-		(3,580,000)
Accretion of Series B redeemable convertible preferred stock		-		(1,858,000)
Net loss attributable to common stockholders - basic		(12,838,000)		(24,276,000)
Changes in fair value of November 2016 warrants		(1,524,000)		-
Net loss attributable to common stockholders - diluted	$	(14,362,000)	$	(24,276,000)
Weighted average common shares outstanding - basic		6,387,425		983,846
Net loss per share of common stock - basic	$	(2.01)	$	(24.67)
Weighted average common shares outstanding - diluted		6,574,117		983,846
Net loss per share of common stock -  diluted	$	(2.18)	$	(24.67)

Antidilutive Securities Excluded from Computation of Diluted Weighted Shares Outstanding

The following outstanding securities at December 31, 2017 and 2016 have been excluded from the computation of diluted weighted average shares outstanding for the years ended December 31, 2017 and 2016, as they would have been anti-dilutive:

	Year Ended
	December 31,
	2017		2016
Options		1,115,865	74,890
Warrants		8,225,087	776,267
Total		9,340,952	851,157