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Share-Based Compensation Expense
 9 Months Ended
Jul. 31, 2018
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Share-Based Compensation Expense
SHARE-BASED COMPENSATION EXPENSE

The following table summarizes share-based compensation expense for the periods indicated (in thousands):
 
Quarter Ended July 31,
 
Nine Months Ended July 31,
 
2018
 
2017
 
2018
 
2017
Product costs
$
783

 
$
709

 
$
2,279

 
$
1,978

Service costs
618

 
619

 
1,965

 
1,926

Share-based compensation expense included in cost of sales
1,401

 
1,328

 
4,244

 
3,904

Research and development
3,082

 
3,139

 
10,133

 
10,001

Sales and marketing
3,417

 
3,242

 
10,505

 
9,628

General and administrative
4,538

 
4,321

 
14,121

 
13,191

Share-based compensation expense included in operating expense
11,037

 
10,702

 
34,759

 
32,820

Share-based compensation expense capitalized in inventory, net
(101
)
 
(17
)
 
(107
)
 
119

Total share-based compensation
$
12,337

 
$
12,013

 
$
38,896

 
$
36,843



As of July 31, 2018, total unrecognized share-based compensation expense was approximately $86.7 million which relates to unvested restricted stock units and is expected to be recognized over a weighted-average period of 1.5 years.