Contingencies (Intellectual Property) (Narrative) (Details) (Intellectual Property, USD $) In Millions, unless otherwise specified	6 Months Ended	0 Months Ended
Jun. 30, 2013 increase	May 24, 2011 Plaintiff Bond
Loss Contingencies [Line Items]
Bond		$ 10.0
Number of times damages may be increased in cases of willful infringement	3

Number of times damages may be increased in cases of willful infringement

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