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Net Income (Loss) Per Share (Narrative) (Details)
12 Months Ended
Oct. 31, 2011
Oct. 31, 2010
Stock Options [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities not included in the computation diluted net income per share 131,388 166,577
Unvested Shares [Member]
   
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive securities not included in the computation diluted net income per share   458,036