Selected Quarterly Financial Data (Tables)

12 Months Ended

Oct. 31, 2012

Quarterly Financial Data [Abstract]

Schedule of Quarterly Financial Information [Table Text Block]

16. Selected Quarterly Financial Data (In thousands except per share amounts) (Unaudited)
									Earnings (Loss)
					Operating		Net		Per Share of
	Operating				Income		Income		Common Stock
	Revenues		Margin		(Loss)		(Loss)		Basic		Diluted
Fiscal Year 2012
January 31	$	471,840	$	220,237	$	79,819	$	76,227	$	1.06	$	1.05
April 30		308,432		171,951		48,782		50,192		0.70		0.70
July 31		161,123		86,460		(2,513)		(4,613)		(0.06)		(0.06)
October 31		181,385		96,798		(365)		(1,959)		(0.03)		(0.03)
Fiscal Year 2011
January 31	$	652,056	$	230,006	$	90,869	$	84,440	$	1.17	$	1.16
April 30		392,567		172,931		52,927		47,408		0.66		0.66
July 31		197,274		81,963		389		(8,703)		(0.12)		(0.12)
October 31		192,008		88,739		(1,174)		(9,577)		(0.13)		(0.13)