Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details 3)

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Commitments and Contingencies (Details 3) (Purported stockholder class action lawsuit filed in Washington District Court)
1 Months Ended
Jan. 31, 2011
Mar. 31, 2009
Jul. 31, 2008
issuer
Purported stockholder class action lawsuit filed in Washington District Court
     
Commitments and Contingencies      
Number of other issuers to file the Issuer Defendants' Joint Motion to Dismiss     29
Notice of potential claims prior to filing suit (in years)   5 years  
Stay period of cases (in days) 90 days