Taxes (Tables)

3 Months Ended

Jan. 31, 2012

Taxes [Abstract]

Provision For Income Taxes And Effective Tax Rates

	Three Months Ended January  31,
	2012			2011
	(in thousands)
Income before income taxes	$	73,829		$	52,332
Provision for income tax	$	17,135		$	4,106
Effective tax rate		23.2	%		7.8	%