Net Loss Per Common Share (Tables)

12 Months Ended

Dec. 31, 2016

Net Loss Per Common Share

Potentially dilutive securities excluded from computations of diluted weighted-average shares outstanding

	Year ended December 31, 2016		Year ended December 31, 2015		Year ended December 31, 2014
Stock options issued and outstanding		2,577,111		1,748,875		473,202
Stock warrants		305,775		326,556		404,778
Unvested restricted stock units		57,500		—		—
Unvested restricted common stock		—		1,750,794		1,750,794
		2,940,386		3,826,225		2,628,774

Summary of the basic and diluted net loss per common share

	Year ended December 31, 2016			Year ended December 31, 2015			Year ended December 31, 2014
Numerator:
Loss from continuing operations	$	(83,011,804	)	$	(38,473,844	)	$	(15,551,848	)
Less: deemed preferred dividends on common stock		—			—			(866,569	)
Net loss attributable from continuing operations to common stockholders	$	(83,011,804	)	$	(38,473,844	)	$	(16,418,417	)
Loss from discontinued operations		—			—			(153,928	)
Net loss attributable to common stockholders	$	(83,011,804	)	$	(38,473,844	)	$	(16,572,345	)
Denominator:
Weighted-average basic and diluted common shares		22,647,583			7,087,618			6,916,404
Basic and diluted net loss per common share from continuing operations	$	(3.67	)	$	(5.43	)	$	(2.37	)
Basic and diluted net loss per common share from discontinued operations		—			—			(0.02	)
Basic and diluted net loss per common share	$	(3.67	)	$	(5.43	)	$	(2.39	)