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Stock-Based Compensation - Incentive Plan Details (Details) - shares		1 Months Ended		12 Months Ended
	Jan. 01, 2015	Mar. 31, 2014	Aug. 31, 2010	Dec. 31, 2015	Dec. 31, 2014
Stock-based compensation
Number of additional shares for the plan				21,684,000	1,000,000
2010 Plan
Stock-based compensation
Term of share incentive plan			10 years
Ordinary shares reserved for issuance			35,000,000
Amount that maximum number of ordinary shares available for issuance is reduced for every share issued pursuant to share option or share appreciation right			1
Amount that maximum number of ordinary shares available for issuance is reduced for every share issued as restricted shares or pursuant to restricted share units			1.75
2014 Plan
Stock-based compensation
Term of share incentive plan	10 years
Ordinary shares reserved for issuance		4,600,000
Number of additional shares for the plan		1,000,000
One-time percentage increase on January 1, 2015 for maximum aggregate number of shares which may be issued (as a percent)	10.00%

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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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- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Amount that maximum number of ordinary shares available for issuance is reduced for every share issued as restricted shares or pursuant to restricted share units.

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Amount that maximum number of ordinary shares available for issuance is reduced for every share issued pursuant to share option or share appreciation right.

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- Definition

Represents the one-time increase in shares available for issuance under plan upon specified date as a percentage of total outstanding shares.

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