The fair value of the underlying ordinary shares.

No definition available.

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The fair value of restricted shares and restricted share units.

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Number of Shares [Abstract]

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Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Weighted-Average Grant-Date Fair Value [Abstract]

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Gross number of share options (or share units) cancelled to grant restricted share during the period.

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The total amount of unrecognized share based compensation of unvested options and incremental share based compensation.

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The total amount of unrecognized share based compensation of unvested options and incremental share based compensation, recognized during rest of vesting period of restricted share.

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No definition available.

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The total amount of unrecognized share based compensation of unvested options and incremental share based compensation, recognized immediately.

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No definition available.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Unrecognized cost of unvested share-based compensation awards.

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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.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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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.

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No definition available.

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An excess of the fair value of the modified award over the fair value of the award immediately before the modification.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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The number of employees affected by the modification of an equity-based compensation plan.

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Share-based Compensation (Restricted shares) (Details) $ / shares in Units, $ in Thousands			12 Months Ended
	Mar. 17, 2011 USD ($) employees $ / shares shares	Mar. 15, 2011 shares	Dec. 31, 2016 CNY (¥)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 CNY (¥) shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 CNY (¥) shares	Dec. 31, 2014 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options cancelled \| shares		18,778,200
Weighted-Average Grant-Date Fair Value
Recognized share-based compensation			¥ 1,890,000	$ 273	¥ 34,354,000		¥ 53,181,000
Ordinary Shares [Member]
Weighted-Average Grant-Date Fair Value
Fair value of underlying ordinary shares	$ 1.14
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted shares, number of employees granted \| employees	22
Award vesting period	4 years
Incremental share-based compensation \| $	$ 500
Total amount of unrecognized share-based compensation of unvested options and incremental share-based compensation \| $	2,200
Total amount of unrecognized share-based compensation of unvested options and incremental share-based compensation, recognized immediately \| $	200
Total amount of unrecognized share-based compensation of unvested options and incremental share-based compensation, recognized during rest of vesting period of restricted share \| $	$ 2,000
Number of Shares
Number of Shares, Unvested, Beginning Balance \| shares					0	0	845,000	845,000
Number of Shares, Granted \| shares	19,008,200						0	0
Number of Shares, Vested \| shares							(676,250)	(676,250)
Number of Shares, Forfeited \| shares							(168,750)	(168,750)
Number of Shares, Unvested, Ending Balance \| shares							0	0
Weighted-Average Grant-Date Fair Value
Weighted-Average Grant-Date Fair Value, Unvested, Beginning Balance						$ 0		$ 1.07
Weighted-Average Grant-Date Fair Value, Granted								0
Weighted-Average Grant-Date Fair Value, Vested								1.07
Weighted-Average Grant-Date Fair Value, Forfeited								1.07
Weighted-Average Grant-Date Fair Value, Unvested, Ending Balance								$ 0
Recognized share-based compensation \| ¥			0		¥ 0		¥ (100,000)
Unrecognized share-based compensation \| ¥			¥ 0		¥ 0
Total fair value of restricted share vested \| $				$ 0		$ 0		$ 700
Restricted Shares and Restricted Share Units [Member]
Weighted-Average Grant-Date Fair Value
Fair value of restricted shares and restricted share units	$ 1.07