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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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- Definition

Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Number of share options (or share units) exercised during the current period.

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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Share-based compensation - Schedule of management and director options activity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share compensation expenses	$ 2,481	$ 4,143	$ 6,979	$ 7,611
Number of options (in shares)
Outstanding (in shares)			10,981,075	10,956,838	10,956,838
Forfeited (in shares)					(324,599)
Exercised (in shares)			(60,000)
Outstanding (in shares)	11,269,911		11,269,911		10,981,075
Weighted average exercise price (in dollars per share)
Outstanding (in dollars per share)			$ 13.23	$ 13.20	$ 13.20
Forfeited (in dollars per share)					$ 13.20
Exercised (in dollars per share)			$ 10.00
Outstanding (in dollars per share)	$ 13.40		$ 13.40		$ 13.23
Management
Number of options (in shares)
Granted (in shares)			348,836		348,836
Weighted average exercise price (in dollars per share)
Granted (in dollars per share)			$ 18.25		$ 14.09
Management and director options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share compensation expenses	$ 1,700	$ 3,700	$ 5,100	$ 6,500
Number of options (in shares)
Outstanding (in shares)	11,269,911		11,269,911
Weighted average exercise price (in dollars per share)
Outstanding (in dollars per share)	$ 13.40		$ 13.40