CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Redeemable convertible shares/units, authorized	43,297,267
Redeemable convertible shares/units, issued	43,259,147	13,549,685
Redeemable convertible shares/units, outstanding	43,259,147	13,549,685
Aggregate liquidation preference	$ 108,371,000	$ 50,326,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	61,917,986	0
Common stock, shares/units issued	335,281	0
Common stock, shares/units outstanding	335,281	0
Redeemable Convertible Preferred Units [Member]
Redeemable convertible shares/units, authorized	0
Redeemable convertible shares/units, issued	0	13,549,685
Redeemable convertible shares/units, outstanding	0	13,549,685
Aggregate liquidation preference		$ 50,326,000
Redeemable Convertible Preferred Shares [Member]
Redeemable convertible shares, par value	$ 0.001
Redeemable convertible shares/units, authorized	43,297,267	0
Redeemable convertible shares/units, issued	43,259,147	0
Redeemable convertible shares/units, outstanding	43,259,147	0
Aggregate liquidation preference	$ 108,371,000
Common Units [Member]
Common stock, shares/units issued		335,281
Common stock, shares/units outstanding		335,281

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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
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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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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 210
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-Section S99
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