Significant Accounting Policies (Tables)

9 Months Ended

Jul. 31, 2011

Significant Accounting Policies (Tables) [Abstract]

Reclassification of the excess from interest and other income to cost of revenues

	Cost of revenues							Interest and other income
	As reported		Reclassified		$ change			As reported		Reclassified		$ change
Three months ended:	$		$		(decrease)			$		$		(decrease)
January 31		317,768		317,487		(281	)		8,514		8,233		(281	)
April 30		305,739		305,583		(156	)		7,155		6,999		(156	)
July 31		392,416		389,505		(2,911	)		8,813		5,902		(2,911	)
October 31		367,152		363,983		(3,169	)		10,348		7,179		(3,169	)