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Share Capital (Details 3) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Stock Appreciation Rights [Member]
     
Stock Appreciation Rights [Line Items]      
Number Outstanding, Beginning balance 4,633,146 4,737,194 4,996,655
Number Outstanding, Vested 0 0 0
Number Outstanding, Granted 0 0 0
Number Outstanding, Exercised (4,633,146) (104,048) (259,461)
Number Outstanding, Expired and cancelled 0 0 0
Number Outstanding, Ending balance 0 4,633,146 4,737,194
Weighted Average Price per Share, Beginning balance $ 2.49 $ 2.50 $ 2.52
Weighted Average Price per Share, Vested $ 0 $ 0 $ 0
Weighted Average Price per Share, Granted $ 0 $ 0 $ 0
Weighted Average Price per Share, Exercised $ 2.49 $ 2.94 $ 2.82
Weighted Average Price per Share, Expired and cancelled $ 0 $ 0 $ 0
Weighted Average Price per Share, Ending Balance $ 0 $ 2.49 $ 2.50
Number Exercisable, Beginning balance 4,633,146 3,100,685 2,665,551
Number Exercisable, Ending Balance 0 4,633,146 3,100,685
Weighted Average Price per Share, Exercisable, beginning Balance $ 2.49 $ 2.50 $ 2.51
Weighted Average Price per Share, Exercisable, Ending balance $ 0 $ 2.49 $ 2.50
Non Vested Stock Appreciation Rights [Member]
     
Stock Appreciation Rights [Line Items]      
Number Outstanding, Beginning balance 0 1,636,509 2,331,104
Number Outstanding, Vested 0 (1,570,539) (435,134)
Number Outstanding, Granted 0 0 0
Number Outstanding, Exercised 0 (65,970) (259,461)
Number Outstanding, Expired and cancelled 0 0 0
Number Outstanding, Ending balance 0 0 1,636,509