CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($)	Jun. 30, 2019	Dec. 31, 2018
Preferred stock, shares designated	50,000,000	50,000,000
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	40,346,906	40,174,821
Common stock, shares outstanding	40,346,906	40,174,821
Preferred stock, par value (in dollars per share)	$ 0.001
Series A Preferred Stock
Preferred stock, shares designated	5,000,000	5,000,000
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares issued	419,859	419,859
Preferred stock, shares outstanding	419,859	419,859
Preferred stock, liquidation preference	$ 625,590	$ 625,590
Series B Preferred Stock
Temporary equity, par value (in dollars per share)	$ 0.001	$ 0.001
Temporary equity, shares designated	10,000,000	10,000,000
Temporary equity, shares issued	3,713,794	3,604,827
Temporary equity, shares outstanding	3,713,794	3,604,827
Temporary equity, liquidation preference	$ 11,512,761	$ 11,174,964
Series B1 Preferred Stock
Temporary equity, par value (in dollars per share)	$ 0.001	$ 0.001
Temporary equity, shares designated	17,000,000	17,000,000
Temporary equity, shares issued	10,264,001	10,057,597
Temporary equity, shares outstanding	10,264,001	10,057,597
Temporary equity, liquidation preference	$ 16,011,842	$ 15,689,851
Series C Preferred Stock
Temporary equity, par value (in dollars per share)	$ 0.001	$ 0.001
Temporary equity, shares designated	44,000	44,000
Temporary equity, shares issued	0	0
Temporary equity, shares outstanding	0	0
Temporary equity, liquidation preference	$ 0	$ 0

Face amount or stated value per share of common stock.

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Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased.

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The aggregate liquidation preference (or restrictions) of stock classified as temporary equity that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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