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Stock-Based Benefit Plans (Tables)
 12 Months Ended
Oct. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock-based compensation expense recognized
The following table provides information regarding the amount of total stock-based compensation expense recognized by us for fiscal 2014, 2013, and 2012 (amounts in thousands):
 
2014
 
2013
 
2012
Total stock-based compensation expense recognized
$
21,656

 
$
19,041

 
$
15,575

Income tax benefit recognized
$
8,322

 
$
7,378

 
$
5,711
Weighted-average assumptions and the fair value used for stock option grants
The following table summarizes the weighted-average assumptions and fair value used for stock option grants in each of the fiscal years ended October 31, 2014, 2013, and 2012:
 
2014
 
2013
 
2012
Expected volatility
36.44% - 44.71%
 
44.04% - 48.13%
 
44.20% - 50.24%
Weighted-average volatility
42.71%
 
46.70%
 
46.99%
Risk-free interest rate
1.45% - 2.71%
 
0.64% - 1.56%
 
0.78% - 1.77%
Expected life (years)
4.55 - 9.02
 
4.48 - 8.88
 
4.59 - 9.06
Dividends
none
 
none
 
none
Weighted-average fair value per share of options granted
$14.26
 
$13.05
 
$8.70
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]
The following table summarizes stock option activity for our plans during each of the fiscal years ended October 31, 2014, 2013, and 2012 (amounts in thousands, except per share amounts):
 
2014
 
2013
 
2012
 
Number
of
options
 
Weighted-
average
exercise
price
 
Number
of
options
 
Weighted-
average
exercise
price
 
Number
of
options
 
Weighted-
average
exercise
price
Balance, beginning
9,924

 
$
24.51

 
10,669

 
$
23.23

 
12,868

 
$
20.94

Granted
819

 
35.16

 
768

 
32.22

 
777

 
20.50

Exercised
(1,313
)
 
20.88

 
(1,454
)
 
19.21

 
(2,941
)
 
12.52

Canceled
(72
)
 
25.23

 
(59
)
 
25.09

 
(35
)
 
20.67

Balance, ending
9,358

 
$
25.94

 
9,924

 
$
24.51

 
10,669

 
$
23.23

Options exercisable, at October 31,
7,482

 
$
24.91

 
7,996

 
$
24.49

 
8,540

 
$
24.09
Intrinsic Value of Options Outstanding and Exercisable [Table Text Block]
The following table provides information pertaining to the intrinsic value of options outstanding and exercisable at October 31, 2014, 2013, and 2012 (amounts in thousands):
 
2014
 
2013
 
2012
Intrinsic value of options outstanding
$
62,073

 
$
84,938

 
$
106,084

Intrinsic value of options exercisable
$
55,776

 
$
68,920

 
$
77,936
Intrinsic Value of Options Exercised and Fair Value of Options [Table Text Block]
Information pertaining to the intrinsic value of options exercised and the fair value of options that became vested or modified in each of the fiscal years ended October 31, 2014, 2013, and 2012, is provided below (amounts in thousands):
 
2014
 
2013
 
2012
Intrinsic value of options exercised
$
18,361

 
$
19,632

 
$
39,730

Fair value of options vested
$
8,447

 
$
8,334

 
$
10,079
Information Regarding the Use of the Net Exercise Method [Text Block]
The following table provides information regarding the use of the net exercise method for fiscal 2014, 2013, and 2012:
 
2014
 
2013
 
2012
Options exercised
96,162

 
531,000

 
303,412

Shares withheld
58,819

 
405,838

 
151,889

Shares issued
37,343

 
125,162

 
151,523

Average market value per share withheld
$
33.78

 
$
32.22

 
$
22.68

Aggregate market value of shares withheld (in thousands)
$
1,987

 
$
13,076

 
$
3,445
Information Regarding the Use of the Stock Swap Method [Text Block]
The following table provides information regarding the use of the “stock swap method” for fiscal 2014, 2013, and 2012:
 
2014
 
2013
 
2012
Options exercised
7,006

 
6,534

 
19,686

Shares tendered
4,273

 
4,034

 
8,224

Shares issued
2,733

 
2,500

 
11,462

Average market value per share tendered
$
33.01

 
$
32.61

 
$
25.52

Aggregate market value of shares tendered (in thousands)
$
141

 
$
132

 
$
210
Employee Stock Option [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Stock-based compensation expense recognized
Information regarding the stock compensation expense, related to stock options, for fiscal 2014, 2013 and 2012 was as follows (amounts in thousands):
 
2014
 
2013
 
2012
Stock compensation expense recognized - options
$
9,005

 
$
7,703

 
$
7,411
Employee Stock [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
The following table provides information regarding our employee stock purchase plan for fiscal 2014, 2013, and 2012:
 
2014
 
2013
 
2012
Shares issued
24,275

 
20,362

 
18,456

Average price per share
$
30.59

 
$
28.71

 
$
22.58

Compensation expense recognized (in thousands)
$
98

 
$
77

 
$
63
Vesting Based On Service [Member] | Restricted Stock Units (RSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
The following table provides information regarding these RSUs for fiscal 2014, 2013, and 2012:
 
2014
 
2013
 
2012
Nonperformance-Based RSUs issued:
 
 
 
 
 
Number of RSUs issued
99,336

 
94,080

 
107,820

Closing price of our common stock on date of issuance
$
35.16

 
$
32.22

 
$
20.50

Aggregate fair value of RSUs issued (in thousands)
$
3,493

 
$
3,031

 
$
2,210

Nonperformance-Based RSU expense recognized (in thousands):
$
3,012

 
$
2,490

 
$
156

 
2014
 
2013
 
2012
At October 31:
 
 
 
 
 
Aggregate Nonperformance-Based RSUs outstanding
304,286

 
225,252

 
137,764

Cumulative unamortized value of Nonperformance-Based RSUs (in thousands)
$
2,043

 
$
1,706

 
$
1,326
Vesting Based On Performance [Member] | Restricted Stock Units (RSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]
The following table provides information regarding the issuance, valuation assumptions, and amortization of the Performance-Based RSUs issued in fiscal 2014, 2013, and 2012:
 
2014
 
2013
 
2012
Number of shares underlying Performance-Based RSUs to be issued
288,817

 
302,511

 
370,176

Closing price of our common stock on Valuation Date
$
35.16

 
$
37.78

 
$
20.50

Aggregate fair value of Performance-Based RSUs issued (in thousands)
$
10,155

 
$
11,429

 
$
7,589

Aggregate number of Performance-Based RSUs outstanding at October 31
961,506

 
672,687

 
370,176

Performance-Based RSU expense recognized (in thousands)
$
9,310

 
$
6,946

 
$
3,952

Unamortized value of Performance-Based RSUs at October 31 (in thousands)
$
8,965

 
$
8,120

 
$
3,636