Amount of paid and unpaid cash, stock, and paid-in-kind (PIK) dividends declared, for example, but not limited to, common and preferred stock.

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The percentage rate used to calculate dividend payments on preferred stock.

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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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The cash inflow from issuance of callable preferred stock which is identified as being convertible to another type of financial security at the option of the issuer or the holder.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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No definition available.

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Number of shares issued during the period as a result of the conversion of convertible securities.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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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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The per share 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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Redeemable Convertible Preferred Stock and Stockholders' Deficit - Additional Information (Details) - USD ($)		1 Months Ended	9 Months Ended
	Oct. 22, 2018	Aug. 31, 2018	Sep. 30, 2018	Dec. 31, 2017
Temporary Equity [Line Items]
Sale of stock			13,200,115	9,131,999
Net proceeds from the sale of redeemable convertible preferred stock			$ 17,712,000
Liquidation preference value			$ 129,071,361	$ 89,776,055
Initial Public Offering \| Subsequent Event
Temporary Equity [Line Items]
Sale of stock price per share	$ 5.00
Redeemable convertible preferred stock converted to aggregate of common stock	13,225,114
Series D
Temporary Equity [Line Items]
Sale of stock		1,842,959	3,923,168
Sale of stock price per share		$ 9.659
Net proceeds from the sale of redeemable convertible preferred stock		$ 17,700,000
Liquidation preference per share			$ 9.659
Liquidation preference value			$ 37,893,880
Senior Stock
Temporary Equity [Line Items]
Entitled to receive noncumulative cash dividends, percentage			8.00%
Senior Series C Stock
Temporary Equity [Line Items]
Entitled to receive noncumulative cash dividends, percentage			8.00%
Series 1
Temporary Equity [Line Items]
Sale of stock			132,255	132,255
Entitled to receive noncumulative cash dividends, percentage			8.00%
Liquidation preference per share			$ 3.99
Liquidation preference value			$ 526,778	$ 526,778
Redeemable Convertible Preferred Stock
Temporary Equity [Line Items]
Dividends declared			$ 0
Series AA
Temporary Equity [Line Items]
Liquidation preference per share			$ 13.28
Series C-3
Temporary Equity [Line Items]
Liquidation preference per share			$ 13.28
Series B
Temporary Equity [Line Items]
Sale of stock			6,251,502	6,251,502
Liquidation preference per share			$ 9.659
Liquidation preference value			$ 60,379,282	$ 60,379,282
Series C-1
Temporary Equity [Line Items]
Sale of stock			2,319,228	2,174,280
Liquidation preference per share			$ 9.659
Liquidation preference value			$ 22,401,423	$ 20,999,997
Series C-2
Temporary Equity [Line Items]
Liquidation preference per share			$ 11.462
Series 2
Temporary Equity [Line Items]
Sale of stock			1	1
Liquidation preference value			$ 250,000	$ 250,000
Aggregate amount of redeemed outstanding preferred stock			$ 125,000