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Share-Based Compensation Expense
 9 Months Ended
Jul. 31, 2019
Share-based Payment Arrangement [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,
 
2019
 
2018
 
2019
 
2018
Product costs
$
781

 
$
783

 
$
2,120

 
$
2,279

Service costs
783

 
618

 
2,460

 
1,965

Share-based compensation expense included in cost of sales
1,564

 
1,401

 
4,580

 
4,244

Research and development
3,560

 
3,082

 
11,034

 
10,133

Sales and marketing
4,192

 
3,417

 
12,323

 
10,505

General and administrative
5,813

 
4,538

 
16,416

 
14,121

Share-based compensation expense included in operating expense
13,565

 
11,037

 
39,773

 
34,759

Share-based compensation expense capitalized in inventory, net
(45
)
 
(101
)
 
93

 
(107
)
Total share-based compensation
$
15,084

 
$
12,337

 
$
44,446

 
$
38,896



As of July 31, 2019, total unrecognized share-based compensation expense was approximately $98.8 million, which relates to unvested stock unit awards and is expected to be recognized over a weighted-average period of 1.5 years.