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Consolidated Statements of Comprehensive Income (Parentheticals) (USD $)
3 Months Ended 6 Months Ended
Apr. 30, 2012
Apr. 30, 2011
Apr. 30, 2012
Apr. 30, 2011
Consolidated Statements Of Comprehensive Income (Unaudited) [Abstract]        
Unrealized Gain (Loss) On Derivatives From Equity Method Investments Arising During Period Tax $ (267,000) $ (66,000) $ (545,000) $ 55,000
Reclassification Adjustment Of Realized Gain (Loss) From Hedging Activities Of Equity Method Investments Included In Net Income Tax $ (7,000) $ 56,000 $ 265,000 $ 308,000