Face amount or stated value per share of common stock.

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- Definition

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

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- Definition

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

+ References

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))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644

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- Definition

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.

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (27)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 480
-SubTopic 10
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=65877616&loc=d3e177068-122764

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- Definition

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.

+ References

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- Definition

The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. 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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- Definition

The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. 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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Financial Statements Schedule I - Condensed Balance Sheets (Parenthetical) (Details) - $ / shares	Dec. 31, 2017	Dec. 31, 2016	Apr. 30, 2016	Jan. 31, 2016	Apr. 30, 2015	Aug. 31, 2014
Condensed Balance Sheet Statements Captions [Line Items]
Ordinary shares, par value	$ 0.00006	$ 0.00006
Ordinary shares, shares authorized	83,333,333	83,333,333
Ordinary shares, shares outstanding	49,912,570	9,657,175
Series A1 Convertible Preferred Shares
Condensed Balance Sheet Statements Captions [Line Items]
Convertible preferred shares, par value		$ 0.00006				$ 0.00006
Convertible preferred shares, shares authorized		8,466,667
Convertible preferred shares, shares issued		8,466,665				6,244,443
Convertible preferred shares, shares outstanding		8,466,665
Series A2 Convertible Preferred Shares
Condensed Balance Sheet Statements Captions [Line Items]
Convertible preferred shares, par value		$ 0.00006			$ 0.00006
Convertible preferred shares, shares authorized		8,904,032
Convertible preferred shares, shares issued		8,442,221			8,442,221
Convertible preferred shares, shares outstanding		8,442,221
Series B1 Convertible Preferred Shares
Condensed Balance Sheet Statements Captions [Line Items]
Convertible preferred shares, par value		$ 0.00006		$ 0.00006
Convertible preferred shares, shares authorized		5,562,337
Convertible preferred shares, shares issued		5,562,335		5,562,335
Convertible preferred shares, shares outstanding		5,562,335
Series B2 Convertible Preferred Shares
Condensed Balance Sheet Statements Captions [Line Items]
Convertible preferred shares, par value		$ 0.00006	$ 0.00006
Convertible preferred shares, shares authorized		3,973,098
Convertible preferred shares, shares issued		3,973,096	3,973,096
Convertible preferred shares, shares outstanding		3,973,096
Parent Company
Condensed Balance Sheet Statements Captions [Line Items]
Ordinary shares, par value	$ 0.00006	$ 0.00006
Ordinary shares, shares authorized	83,333,333	83,333,333
Ordinary shares, shares outstanding	49,912,570	9,657,175
Parent Company \| Series A1 Convertible Preferred Shares
Condensed Balance Sheet Statements Captions [Line Items]
Convertible preferred shares, par value		$ 0.00006
Convertible preferred shares, shares authorized		8,466,667
Convertible preferred shares, shares issued		8,466,665
Convertible preferred shares, shares outstanding		8,466,665
Parent Company \| Series A2 Convertible Preferred Shares
Condensed Balance Sheet Statements Captions [Line Items]
Convertible preferred shares, par value		$ 0.00006
Convertible preferred shares, shares authorized		8,904,032
Convertible preferred shares, shares issued		8,442,221
Convertible preferred shares, shares outstanding		8,442,221
Parent Company \| Series B1 Convertible Preferred Shares
Condensed Balance Sheet Statements Captions [Line Items]
Convertible preferred shares, par value		$ 0.00006
Convertible preferred shares, shares authorized		5,562,337
Convertible preferred shares, shares issued		5,562,335
Convertible preferred shares, shares outstanding		5,562,335
Parent Company \| Series B2 Convertible Preferred Shares
Condensed Balance Sheet Statements Captions [Line Items]
Convertible preferred shares, par value		$ 0.00006
Convertible preferred shares, shares authorized		3,973,098
Convertible preferred shares, shares issued		3,973,096
Convertible preferred shares, shares outstanding		3,973,096