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%

X

- Definition

Entity wide disclosure on geographic areas long lived assets percentage.

+ References

No definition available.

+ Details

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X

- Details

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Balance Type:	na
Period Type:	duration