Represents the additional implicit service period.

No definition available.

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- Definition

Represents the restricted period of holding after exercise.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of stock awards vesting each year.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of stock awards vesting in third and forth year of grand date.

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of stock awards vesting in second year of grand date.

+ References

No definition available.

+ Details

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- Definition

Percentage of annual increase of shares that may be issued in accordance with the plan of the total number of shares issued and outstanding on the last day of the immediately preceding fiscal year.

+ References

No definition available.

+ Details

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- Definition

Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements.

+ References

No definition available.

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- Definition

Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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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

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Paragraph 2
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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 718
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Share-Based Compensation - Summary (Details) - CNY (¥) ¥ in Thousands	1 Months Ended	12 Months Ended
	Jul. 31, 2018	Dec. 31, 2018	Dec. 31, 2017
2015 Plan and the 2018 Plan \| Stock Options
Share-Based Compensation
Required Service period (in years)		4 years
Annual vesting percentage		25.00%
Restricted period of holding after exercise (in years)		3 years
Additional implicit service period (in years)		3 years
Vesting period (in years)		7 years
Liability recognized for receipt of exercise prices before end of lock-up periods.		¥ 0	¥ 0
2015 Plan \| Stock Options
Share-Based Compensation
Number of shares authorized		945,103,260
Term of the options (in years)		10 years
2018 Plan \| RSU
Share-Based Compensation
Number of shares authorized	363,130,400
Term of the options (in years)		4 years
Percentage of annual increase on shares issued	1.00%
Annual vesting percentage		25.00%
Vesting percentage on 2nd anniversary of the grant date		50.00%
Vesting percentage on 3rd and 4th anniversary of the grant date		25.00%