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Consolidated Statements of Comprehensive Income (Parentheticals) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Jul. 31, 2013
Jul. 31, 2012
Jul. 31, 2013
Jul. 31, 2012
Consolidated Statements of Comprehensive Income Parenthetical        
Income tax expense on changes in unrealized gains on derivative instruments $ 788   $ 788  
Income tax expense on amortization of net (gains) losses on derivatives 320 39 399 118
Income tax on unrealized holding gains (losses) on available-for-sale investments (229) 95 874 (932)
Income tax on foreign currency translation adjustments $ 1,760 $ 233 $ 2,386 $ 252