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Share Capital (Details 4) (Stock Appreciation Rights [Member], USD $) |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2012 Exercise Price 3.72 - 8.94 | Dec. 31, 2012 Exercise Price 3.72 - 8.94 Maximum [Member] | Dec. 31, 2012 Exercise Price 3.72 - 8.94 Minimum [Member] | Dec. 31, 2012 Exercise Price 8.75 - 8.95 | Dec. 31, 2012 Exercise Price 8.75 - 8.95 Maximum [Member] | Dec. 31, 2012 Exercise Price 8.75 - 8.95 Minimum [Member]
Number Outstanding, Balance |  |  |  |  | 3,078,764 |  |  | 10,000 |  |
Number Outstanding, Weighted Average Contractual Life |  |  |  |  | 1 year 2 months 1 day |  |  | 3 years 3 months 29 days |  |
Number Outstanding, Weighted Average Price per Share (in dollars per share) |  |  |  |  | $ 3.72 |  |  | $ 8.95 |  |
Number Exercisable, Balance | 3,088,764 | 2,067,123 | 1,777,034 |  | 3,078,764 |  |  | 10,000 |  |
Number Exercisable, Weighted Average Price per Share (in dollars per share) | $ 3.74 | $ 3.75 | $ 3.77 | $ 8.18 | $ 3.72 |  |  | $ 8.95 |  |
Number Exercisable, Weighted Average Contractual Life |  |  |  |  | 1 year 2 months 1 day |  |  | 3 years 3 months 29 days |  |
Range of Exercise Prices (in dollars per share) |  |  |  |  |  | $ 8.94 | $ 3.72 |  | $ 8.95 | $ 8.75

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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were exercised in period. + References No definition available. + Details
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- Definition The weighted average fair value of vested awards on equity-based plans excluding stock options (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) as of the balance sheet date. + References No definition available. + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding stock options (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) as of the balance sheet date. + References No definition available. + Details
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- Definition The number of vested equity-based payment instruments, excluding stock options, that validly exist and are outstanding as of the balance sheet date. + References No definition available. + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock options, that validly exist and are outstanding as of the balance sheet date. + References No definition available. + Details
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- Definition Weighted average remaining contractual term for equity-based awards excluding options, 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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