Share Capital (Details) (USD $) In Thousands, except Share data, unless otherwise specified			3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Mar. 31, 2013 Common Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at December 31, 2012 (shares)	259,105,970	259,015,970	259,015,970
Balance at December 31, 2012	$ 694,906	$ 694,652	$ 694,652
Option exercises (shares)			90,000
Option exercises			254
Balance at March 31, 2013 (shares)	259,105,970	259,015,970	259,105,970
Balance at March 31, 2013	$ 694,906	$ 694,652	$ 694,906