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Subsequent Events	6 Months Ended
Subsequent Events	Jun. 30, 2012
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events In July 2012, a technology partner notified us of a dispute regarding royalties paid to it for the right to include their technology in certain products sold by us under an intellectual property licensing agreement. This claim relates to certain sales during the period from June 2006 to August 2011. We are reviewing this claim, but cannot at this stage in the process determine the likelihood of the outcome. Our initial estimate of our potential exposure ranges between $0.0 million and $1.9 million.