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Share-based compensation (Tables) | 6 Months Ended
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Jun. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of management and director options activity | The management and director options activity for the six months ended June 30, 2014 and the year ended December 31, 2013 were as follows:
| Number of options |  | Weighted average exercise price
Balance as of January 1, 2013 | 10,956,838 |  |  | $ | 13.20 |
Granted - employees | 348,836 |  |  | 14.09 |
Granted - directors | — |  |  | — |
Forfeited | (324,599 | ) |  | 13.20 |
Exercised | — |  |  | — |
Balance as of December 31, 2013 | 10,981,075 |  |  | 13.23 |
Granted - employees | 348,836 |  |  | 18.25 |
Granted - directors | — |  |  | — |
Forfeited | — |  |  | — |
Exercised | — |  |  | — |
Balance as of June 30, 2014 | 11,329,911 |  |  | $ | 13.38 |
Schedule of management and director options outstanding | The following table summarizes information about the Company’s management and director share options outstanding as of June 30, 2014:
| Options outstanding | Options exercisable
Range of exercise prices | Number of options |  | Weighted average exercise price |  | Number of options |  | Weighted average exercise price
$10.00-$10.89 | 6,588,647 |  |  | $10.03 |  | 2,346,787 |  |  | $10.02
$15.05-$16.89 | 2,405,516 |  |  | $15.94 |  | 782,262 |  |  | $16.02
$20.00-$25.05 | 2,335,748 |  |  | $20.21 |  | 782,262 |  |  | $20.02
| 11,329,911 |  |  | $13.38 |  | 3,911,311 |  |  | $13.22
Schedule of restricted share award activity | Restricted share award activity for the six months ended June 30, 2014 and year ended December 31, 2013 was as follows:
| Number of non- vested restricted shares |  | Weighted average grant date fair value
Balance as of January 1, 2013 | 619,300 |  |  | $ | 10.00 |
Granted | 37,856 |  |  | 15.22 |
Forfeited | — |  |  | — |
Vested | — |  |  | — |
Balance as of December 31, 2013 | 657,156 |  |  | 10.25 |
Granted | 9,614 |  |  | 15.29 |
Forfeited | — |  |  | — |
Vested | — |  |  | — |
Balance as of June 30, 2014 | 666,770 |  |  | $ | 10.37 |

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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + 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 (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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