LEGAL PROCEEDINGS AND CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	Feb. 28, 2011 Positive Outcome of Litigation [Member] Patent Infringement Claim One [Member]	Dec. 31, 2008 Positive Outcome of Litigation [Member] Patent Infringement Claim One [Member]	Oct. 31, 2006 Positive Outcome of Litigation [Member] Patent Infringement Claim One [Member]	Oct. 31, 2004 Positive Outcome of Litigation [Member] Patent Infringement Claim One [Member] patents	May 31, 2008 Positive Outcome of Litigation [Member] Patent Infringement Claim Two [Member] patents	Feb. 28, 2010 Pending or Threatened Litigation [Member]	Dec. 31, 2008 Pending or Threatened Litigation [Member] Patent Infringement Claim One [Member]	Dec. 31, 2009 Pending or Threatened Litigation [Member] Patent Infringement Claim Two [Member] patents	Nov. 30, 2008 Pending or Threatened Litigation [Member] Patent Infringement Claim Two [Member] patents	May 31, 2010 Pending or Threatened Litigation [Member] Patent Infringement Claim Three [Member] patents	Nov. 30, 2009 Pending or Threatened Litigation [Member] Patent Infringement Claim Three [Member] patents	Feb. 28, 2010 Pending or Threatened Litigation [Member] Patent Infringement Claim Four [Member] patents
Gain and Loss Contingencies [Line Items]
Number of patents in filed infringement claims				4	3				3		2	4
Number of patents withdrawn from infringement claims								1		1
Number of patents remaining in infringement claims								2		1
Period for petition for further stay of permanent injunction							90 days
Damages awarded to the Company	$ 12.9	$ 6.1	$ 34.0
Damages sought after the Company						$ 17.0