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Summary Consolidated Quarterly Financial Data (Unaudited) Summary Consolidated Quarterly Financial Data (Unaudited) (Tables)
 12 Months Ended
Oct. 31, 2012
Summary Consolidated Quarterly Financial Data (Unaudited) [Abstract]  
Schedule of Quarterly Financial Information [Table Text Block]
The table below provides summary income statement data for each quarter of fiscal 2012 and 2011 (amounts in thousands, except per share data).
 
Three Months Ended,
 
October 31
 
July 31
 
April 30
 
January 31
Fiscal 2012:
 
 
 
 
 
 
 
Revenue
$
632,826

 
$
554,319

 
$
373,681

 
$
321,955

Gross profit
$
127,088

 
$
106,391

 
$
66,860

 
$
50,347

Income (loss) before income taxes
$
60,749

 
$
42,952

 
$
15,649

 
$
(6,408
)
Net income (loss)
$
411,417

 
$
61,643

 
$
16,872

 
$
(2,786
)
Income (loss) per share (1)
 
 
 
 
 
 
 
Basic
$
2.44

 
$
0.37

 
$
0.10

 
$
(0.02
)
Diluted
$
2.35

 
$
0.36

 
$
0.10

 
$
(0.02
)
Weighted-average number of shares
 
 
 
 
 
 
 
Basic
168,416

 
167,664

 
166,994

 
166,311

Diluted (2)
174,775

 
170,229

 
168,503

 
166,311

 
 
 
 
 
 
 
 
Fiscal 2011:
 
 
 
 
 
 
 
Revenue
$
427,785

 
$
394,305

 
$
319,675

 
$
334,116

Gross profit
$
65,281

 
$
54,358

 
$
43,321

 
$
52,151

Income (loss) before income taxes
$
15,277

 
$
3,888

 
$
(31,484
)
 
$
(17,047
)
Net income (loss)
$
15,043

 
$
42,108

 
$
(20,773
)
 
$
3,417

Income (loss) per share (1)
 
 
 
 
 
 
 
Basic
$
0.09

 
$
0.25

 
$
(0.12
)
 
$
0.02

Diluted
$
0.09

 
$
0.25

 
$
(0.12
)
 
$
0.02

Weighted-average number of shares
 
 
 
 
 
 
 
Basic
166,896

 
168,075

 
166,910

 
166,677

Diluted (2)
167,525

 
169,338

 
166,910

 
168,121

(1)
Due to rounding, the sum of the quarterly earnings per share amounts may not equal the reported earnings per share for the year.
(2)
For the three months ended January 31, 2012 and April 30, 2011, there were no common stock equivalents used in the calculation of diluted loss per share because the Company reported a net loss for each period, and any common stock equivalents would be anti-dilutive.