Legal Proceedings (Details)	0 Months Ended
	Jan. 26, 2011 Minor [Member]	May 01, 2009 Minor [Member]	Oct. 06, 2009 Stockholder Derivative Litigation [Member]	Sep. 01, 2009 Stockholder Derivative Litigation [Member]	Aug. 31, 2009 Stockholder Derivative Litigation [Member]	Dec. 21, 2010 Strugala [Member]	Mar. 21, 2011 Microsoft [Member]	Aug. 05, 2010 Lina [Member]	Aug. 12, 2010 Burstein [Member]
Loss Contingencies [Line Items]
Total number of employees under subclass one		500
Total number of employees under subclass two		200
Number of plaintiffs added to case management conference	2
Consolidated cases, number of lawsuits				5
Number of putative shareholder derivative complaints filed			1		5	1	1	1	1