CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Convertible preferred stock, shares authorized	11,000,000	11,000,000
Convertible preferred stock, shares issued	5,534,431	5,537,062
Convertible preferred stock, shares outstanding	5,534,431	5,537,062
Series A
Convertible preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	5,524,926	5,524,926
Convertible preferred stock, shares issued	5,524,926	5,524,926
Convertible preferred stock, shares outstanding	5,524,926	5,524,926
Redemption amount	$ 12,738,822	$ 12,738,822
Liquidation preference	$ 9,199,002	$ 9,199,002
Series B convertible preferred stock
Convertible preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	11,000	11,000
Convertible preferred stock, shares issued	1,971	1,971
Convertible preferred stock, shares outstanding	1,971	1,971
Series B-1 convertible preferred stock
Convertible preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	63	63
Convertible preferred stock, shares issued	0	0
Convertible preferred stock, shares outstanding	0	0
Series B-2 convertible preferred stock
Convertible preferred stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Convertible preferred stock, shares authorized	10,165	10,165
Convertible preferred stock, shares issued	7,534	10,165
Convertible preferred stock, shares outstanding	7,534	10,165
Common Stock
Common stock, shares authorized	210,000,000
Common Stock \| Common stock - voting
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	150,000,000	150,000,000
Common stock, shares issued	18,286,196	14,273,061
Common stock, shares outstanding	18,286,196	14,273,061
Common Stock \| Common stock - non-voting
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	40,301,237	40,301,237
Common stock, shares outstanding	40,301,237	40,301,237

Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

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No definition available.

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The redemption (or callable) amount of currently redeemable preferred stock. Includes amounts representing dividends not currently declared or paid but which will be payable under the redemption features or for which ultimate payment is solely within the control of the issuer.

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Per share amount of par value or stated value of stock classified as temporary equity. 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.

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The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. 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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