Summary of Significant Accounting Policies - Property Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified			12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Building [Member] Y	Dec. 31, 2012 Machinery and Equipment [Member] Y	Dec. 31, 2012 Software [Member] Y
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life, Minimum			20	3	3
Property, Plant and Equipment, Useful Life, Maximum			30	10	7
Unamortized software development costs	$ 407,032	$ 381,700

The maximum useful life of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

No definition available.

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