Series A Redeemable Convertible Preferred Stock (Tables)

9 Months Ended

Sep. 30, 2017

Equity [Abstract]

Embedded Derivative Instruments Rollforward

The fair value of these derivative instruments and the loss recorded on the change in the fair value of these derivative instruments, which was included in “Interest and other income, net” within the condensed consolidated statement of operations, for the three and nine months ended September 30, 2017 and 2016, were as follows:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2017		2016		2017		2016
Beginning Balance	$	419,560	$	164,670	$	336,862	$	82,024
Total loss recognized in earnings	5,076		8,997		87,774		91,643
Ending Balance	$	424,636	$	173,667	$	424,636	$	173,667

Reconciliation of net (loss) income attributable to common stockholders

The following represents a reconciliation of net loss attributable to common stockholders for the three and nine months ended September 30, 2017 and 2016:

	Three Months Ended September 30,					Nine Months Ended September 30,
	2017		2016			2017			2016
Net loss	$	1,429,173	$	(1,976,173	)	$	(322,825	)	$	(9,807,667	)
Effects of Series A redeemable convertible preferred stock:
Less: Series A redeemable convertible preferred stock dividends	215,000		194,012			634,664			581,986
Less: Accretion to redemption value of Series A redeemable convertible preferred stock	—		178,619			—			513,269
Net gain (loss) attributable to common stockholders	$	1,214,173	$	(2,348,804	)	$	(957,489	)	$	(10,902,922	)