Net Loss Per Share Attributable to Common Stockholders (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2017

Dec. 31, 2016

Net Loss Per Share Attributable to Common Stockholders

Schedule of calculation of basic and diluted net loss per common share

	March 31,			March 31,
	2017			2016
Net loss attributable to common shareholders	$	(4,715,358	)	$	(3,984,204	)
Shares used to compute net loss per common share, basic and diluted	14,157,351			9,307,354
Net loss per share attributable to common shareholders, basic and diluted	$	(0.33	)	$	(0.43	)

	December 31, 2016			December 31, 2015
Net loss attributable to common shareholders	$	(14,733,780	)	$	(16,637,924	)
Shares used to compute net loss per common share, basic and diluted		10,951,178			6,153,139
Net loss per share attributable to common shareholders, basic and diluted	$	(1.35	)	$	(2.70	)

Schedule of common stock equivalents excluded from the calculation of diluted net loss per common share

	March 31,	March 31,
	2017	2016
Options issued and outstanding	2,528,650	894,766
Warrants to purchase common stock	6,339,792	748,872
Restricted stock units	20,789	20,789
Total	8,889,231	1,664,427

	December 31, 2016		December 31, 2015
Options issued and outstanding		2,571,220		919,506
Warrants to purchase common stock		5,968,876		748,872
Restricted stock units		20,789		55,536
Total		8,560,885		1,723,914