v2.4.0.6

Operating Segments (Details 7) | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | --- | ---
United States [Member] |  |  |
Long-lived assets, other than financial instruments and deferred tax assets, based on the location of the legal entity that owns the asset |  |  |
Long-lived assets, other than financial instruments and deferred tax assets | 81.00% | 80.00% | 88.00%
South Africa [Member] |  |  |
Long-lived assets, other than financial instruments and deferred tax assets, based on the location of the legal entity that owns the asset |  |  |
Long-lived assets, other than financial instruments and deferred tax assets | 5.00% | 5.00% | 7.00%
Canada [Member] |  |  |
Long-lived assets, other than financial instruments and deferred tax assets, based on the location of the legal entity that owns the asset |  |  |
Long-lived assets, other than financial instruments and deferred tax assets | 4.00% | 2.00% | 2.00%
Other Country [Member] |  |  |
Long-lived assets, other than financial instruments and deferred tax assets, based on the location of the legal entity that owns the asset |  |  |
Long-lived assets, other than financial instruments and deferred tax assets | 10.00% | 13.00% | 3.00%

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